Person in this family
John Leahey
This entry is about John Leahey (about 1861 – 30 August 1887). For other family members with the same first and family name, see John Leahey (10 June 1907 – 26 December 1980 (compiled)), John Leahey (Born about 1896; death not recorded).
about 1861 – 30 August 1887
The 1880 census explicitly identifies John, 19, as Dennis and Ann’s son and records him working “On Boat,” converting the long-suspected link into documented fact.
Proved by a record
John Leahey (about 1861–1887) is now documented by the 1880 census as the son of Dennis and Ann Leahey.
Born at New York
Recorded as: John Leahy
How is this person related?
Andrew John Leahey’s great-great-grandparent
Gina D. Cacace’s spouse's great-great-grandparent (by marriage)
Abigail Ann Leahey’s great-great-great-grandparent
Marie C. Fitzgerald’s spouse's great-grandparent (by marriage)
Kevin Leahey’s great-grandparent
Worked out from the recorded parents and marriages. No sex is recorded for anyone in this archive, so the wording stays neutral.
How this person is related to Andrew:
John Leahey is your 2× great-grandparent.
Life
The oldest open question in this branch is resolved. In the 1880 census of Jersey City, John Leahey was recorded in Dennis Leahey’s household as “Son.” He was 19, single, born in New York, with both parents born in Ireland. Dennis was the household head and Ann his wife. This is a direct record statement of parentage, replacing the earlier inference based only on the shared headstone and two baptism sponsors.
The same census gives John’s occupation exactly as “On Boat.” His father Dennis was a “Boatman” and was later indexed as Captain Dennis Leahey. John’s brother Matthew continued the family waterfront trade as a vessel captain, boat owner, ship carpenter and caulker associated with coal barges.
John and Margaret Mahoney are named as the parents of James D. Leahey in James’s funeral entry, and a closely matching 1886 baptism names father John and mother Marg’t Mahoney. Together those records place John in the now-documented direct line: Andrew → Kevin → John Leahey (born 1907) → James D. Leahey → John Leahey (about 1861–1887) → Dennis Leahey.
The family monument records “JOHN LEAHEY / DIED AUG. 30, 1887.” The Holy Name Cemetery card index adds a burial date of 1 September 1887, age 26, card 42138. It indexes his birthplace as Ireland, conflicting with the contemporaneous and specific 1880 census answer of New York. Both are retained; the archive does not silently choose between them.
How we know this: Documented: the 1880 census explicitly says John was Dennis’s son and Ann was Dennis’s wife. The census also documents John’s occupation and New York birth; the cemetery index documents burial while conflicting on birthplace. [1][2][3][4][5][6][7][8][9][10][11]
Death and burial
Evidence distinction: [RECORD] means text read from the photographed stone. [COMPILED] means volunteer-typed memorial information and is only a lead.
Find a Grave memorial 184188835
Why this memorial is attached
Matched by the memorial’s named parents, spouse and child, plus the Holy Name cemetery and photographed joint monument. Find a Grave memorial 184188835 (findagrave.com).
Parents Dennis C Leahey Sr 1837–1907; Ann Galvin Leahey 1845–1919 | Spouse Margaret Mahoney Hennessey 1867–1910 | Children James Dennis Leahey 1886–1914
[COMPILED] Volunteer-typed memorial fields
These fields are leads, not civil or church records, and do not replace documented dates. Find a Grave memorial 184188835 (findagrave.com).
Name: John Leahey Birth: Oct 1861 Death: 27 Aug 1887 (aged 25) Cemetery: Holy Name Cemetery and Mausoleum, Jersey City, Hudson County, New Jersey, USA Plot: Blk-Y Sec-A Gr-18 1A Family links: Parents: Dennis C Leahey Sr 1837–1907; Ann Galvin Leahey 1845–1919. Spouse: Margaret Mahoney Hennessey 1867–1910 (m. 1885). Siblings: James J Leahey 1864–1947; Matthew Sylvester Leahy 1866–1934;Show the full recordHide the full recordFull record, about 100 words
Dennis Charles Leahey Sr 1867–1957; Francis John Leahey 1868–1913; Anna Bridget ‘Annie’ Leahey Collins 1870–1905; Malachy Leahy 1870–1960; Catherine Theresa Leahey 1874–1955; Mary Ellen H Leahey Gorman 1875–1944; Peter Vincent Leahey 1876–1950; Hanorah Matilda Leahey Hedley 1879–1917; Michael Joseph Leahey 1880–1938. Child: James Dennis Leahey 1886–1914.
Photograph status: a photographed inscription is available and shown below. Find a Grave memorial 184188835 (findagrave.com).
[RECORD] Photographed inscription, transcribed verbatim
JOHN LEAHEY DIED AUG. 30, 1887 DENNIS C. LEAHEY SR. DIED APR. 26, 1907
Citation: Find a Grave memorial 184188835 (findagrave.com); monument photograph credited below.

Conflicts retained
Conflict: The photographed stone says 30 August 1887, while both the volunteer-typed memorial date and the New Jersey civil death index say 27 August 1887. The conflict is unresolved; the archive does not replace either record silently. Open the memorial evidence (findagrave.com).
27 Aug 1887 | JOHN LEAHEY / DIED AUG. 30, 1887
Family
Parents
Siblings · birth order
- John Leahey (this person)
- James J. Leahey
- Matthew S. Leahey
- Dennis C. Leahey
- Francis John Leahey
- Malachy J. Leahy
- Anna Bridget Leahey Collins
- Catherine Theresa Leahey
- Mary H. Leahey Gorman
- Peter Vincent Leahey
- Hanorah Matilda Leahey Hedley
- Michael Leahey
Children
See this family in the family treeWork and occupation
- On Boat — 1880
John Leahey — Son — 19 — On Boat
Citation: 1880 United States census: Dennis Leahey household [1]
Where they lived
- 1880: Jersey City, Hudson County, New Jersey
Use the place list first. The map below is optional.
Places listed on this page
- New York
- Bayonne, Hudson County, New Jersey
- Jersey City, Hudson County, New Jersey
- Hoboken, Hudson County, New Jersey
- Syracuse, Onondaga County, New York
- New York City, New York
- Holy Name Cemetery, Jersey City Cemetery or burial place
- New Jersey
- Ireland
- Holy Name Cemetery, Jersey City, Hudson County, New Jersey Cemetery or burial place
- United States
- Port Johnston coal pier, Bayonne, Hudson County, New Jersey
The map could not load. The complete place list is above it.
The pins show approximate places. The line only joins them in time order; it does not prove the route travelled. 4 of the places listed above are recorded only as a county or country, so they are not pinned. Cemetery and burial places have red pins.
Timeline
Parents’ marriage window precedes his birth [INFERENCE]
Dennis and Ann were together and marked married within the year in 1860; both reported 40 years married in 1900. John’s about-1861 birth therefore no longer supports an earlier-wife theory. [7]
From our family tree - no record found yet
Born
The 1880 census says New York; the later cemetery index says Ireland. Both are retained. [1]
Proved by a record
Documented as Dennis and Ann’s son
John was explicitly “Son” of head Dennis, with Ann as Dennis’s wife; his occupation was “On Boat.” [1]
Proved by a record
Harbor context does not identify John’s route
Period sources document coal boats and ten-boat tows between Port Johnson/Johnston and New York, but John’s person-specific census entry says only “On Boat.” Dennis’s separately proved route is not assigned to John. [9]
From our family tree - no record found yet
Buried at Holy Name Cemetery
The index gives burial 1 September, age 26, card 42138, and Ireland as birthplace, conflicting with the census. [3]
Proved by a record
Conflicting compiled death date
Find a Grave types 27 August 1887; the photographed monument reads 30 August 1887. [6]
From our family tree - no record found yet
Original records
FamilySearch Holy Name Cemetery card index, 1849–1984
An index is a list that points to where the full record can be found. It matters on this page because it records information connected with John Leahey.
The full file is not saved on this site.
Original source (familysearch.org)
Tap to open a larger copyNew Jersey geographic birth index, John Lahey, 10 Jun 1907, Bayonne
An index is a list that points to where the full record can be found. It matters on this page because it records information connected with John Leahey.
Open the larger document
Original source (archive.org)
Machine-read text (may contain errors) · Partial machine reading
Automated reading aid only. The human-verified quotations elsewhere in the archive remain authoritative.
en re tee oe ee me a tne ee De. Ce 8 ee 8 8 ee es et ne INDEX OF BIRTHS IN NEW JERSEY 1907 CHRISTIAN NAME OR PARENTS’ INITIALS Lazarowitz Harry Lescak Josefa Levin Belle Leibvhoff Jennette Long Eliza Lynch T. & B. Lewandoska Florancya ; Lukach Frank 5 Levein imma Lewicz Joseph Lewicz Willienm Levein Ida Looby James Lué Lam Elbert HM. Lococco Emaneula Le Mall J. & iu. Lavine Zelda A. Lehr Veronica Lowrie Rosie Lawless Margaret Logan E. & E. Lapidor Sadie List H. & Re Lee Margareth D. Leso Johanna J, Lawler Francis, Jr. Lyster Irene Lutter John E. Lazarus Herbert B. Lahey John Lascenik Mary Levien Tillie Leibowitz Tiny Lee Ellen Lioman , Antony Ludlan Harold W. Lorez Helena Lapinske Stanislava 27 Lingquist Edward H. 27 Lee Elma 2 Levers Mary si 15 Levin Michael e 23 Lautermilch Henry "29 Langmaid Ralph 5. Sept. l aes 3 een re
Find a Grave memorial, John Leahey
This old record gives information about the person or family named here. It matters on this page because it records information connected with John Leahey.
The full file is not saved on this site.
Original source (findagrave.com)
Grave photograph, John and Dennis Leahey monument
This old record gives information about the person or family named here. It matters on this page because it records information connected with John Leahey.
The full file is not saved on this site.
Original source (images.findagrave.com)
Tap to open a larger copySt. Mary Star of the Sea baptism register, Denis Leahey, 1886
This is an entry in a church book, often naming a child, parents, and godparents. It matters on this page because it records information connected with John Leahey.
Open the larger document
Original source (hudsoncountynjgenealogy.org)
Machine-read text (may contain errors) · Good machine reading
Automated reading aid only. The human-verified quotations elsewhere in the archive remain authoritative.
No. 55 Name of Date Date of Father’s Sponsors Priest Marriage, etc.
Person and Baptism Name
Baptized Place of Mother’s
Birth Maiden
Name
73 Edward Apr 3 Apr 4 - James Edw. A. Egan
Watson 1886 1886 Mary Egan Martin
Anna Egan
74 Johanna Mar 13 Apr 4 - George Edw. " Married to Paul
Schafer - 1886 1886 Bridget Sullivan Kail - Jan 30 -
Connolly Mary 1909
Fitzgerald in St. Patrick's
- Elizabethport,
N.J. Rev.
Gessner
75 Herbert Ernst Mar 21 Apr 11 - Francis Richard "
- 1886 1886 Ellen Welsh
Walsh M. Ernst
76 James Apr 1 - Apr 11 - Henry James " Married to Jas.
Reickert 1886 1886 Bridget Casey Rickert - Oct
Monahan Bridget 13 1909 in St.
Boyle Mary's A.M.
Egan
77 Denis Leahey Apr 3 - Apr 11 - John Denis "
1886 1886 Marg't Leahey
Mahoney Anna
Leahey
78 Henry Apr 2 - Apr 11 - Thomas John Jones "
McInnierney 1886 1886 Matilda Lizzie
Caldwell Caldwell
79 Margaret Mar 27 Apr 11 - Timothy Henry "
Cronin - 1886 1886 Marg't Dillon
Mitchell Mary
Thomas
80 Anna Lynch Mar 29 Apr 11 - Jeremiah Jas. "
- 1886 1886 Mary Callahan
Callahan Mary
Sullivan
81 James Apr 6 - Apr 11 - Patrick John Boyle "
Sweeney 1886 1886 Marg't Mary
Mulligan Sweeney
82 James Calden Mar 26 Apr 11 - Patrick John Trolan "
- 1886 1886 Sarah Lee Mary
CallananJohn Leahey memorial with photographed joint Leahey stone
This old record gives information about the person or family named here. It matters on this page because it records information connected with John Leahey.
The full file is not saved on this site.
Original source (findagrave.com)
FamilySearch World War II draft-card image search
This old record gives information about the person or family named here. It matters on this page because it records information connected with John Leahey.
The full file is not saved on this site.
Original source (familysearch.org)
What the records say
11 records transcribed.
Record exhibit
1880 United States census: Dennis Leahey household
A census is a government list of the people who were living in a home.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
Jersey City, Precinct 3, District 2, sheet 287A, household 9289048, NARA T9: Dennis Leahey, self, 42, Ireland, married, Boatman; Ann Leahey, wife, 42, Ireland; John Leahey, son, 19, New York, single, On Boat, both parents born Ireland; James 16 (NY), Matthew 14 (NJ), Dennis 12 (NY), Francis 11 (NY), Malachy 10 (NY), Annie 8 (NJ), Catherine 6 (NY), Mary Ellen 5 (NY), Peter 4 (NJ), Honora M. 2 (NJ). Citation: “United States, Census, 1880,” FamilySearch, Entry for Dennis Leahey and Ann Leahey, 1880.
Record exhibit
Memorial and grave photographs
This old record gives information about the person or family named here.
Partly proved
Verbatim transcription currently held in this archive — reproduced in full.
JOHN LEAHEY / DIED AUG. 30, 1887 / DENNIS LEAHEY / DIED APR. 26, 1907. | State or territory; volume, ED, sheet, and line numbers; county, city, and MCD. | Hudson County (excluding Jersey City) ... ED 41 ... ED 52. | Aged 70y. | Y-A-18, | Y-A-18 | 27 Aug 1887 | DIED AUG. 30, 1887. | DIED AUG. 30, 1887, | 27 Aug 1887.
Record exhibit
Holy Name Cemetery interment index: John Leahy
An index is a list that points to where the full record can be found.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
Holy Name Cemetery card index: John Leahy, age 26, estimated birth 1861, birthplace indexed Ireland, burial 1 September 1887, card 42138.
Record exhibit
register page 55 PDF
This old record gives information about the person or family named here.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
Denis Leahey; birth Apr 3-1886; baptism Apr 11-1886; father John; mother Marg't Mahoney; sponsors Denis Leahey, Anna Leahey. | John/US Margaret Mahoney/US | Denis Leahey; birth Apr 3-1886; baptism Apr 11-1886; father John; mother Marg't Mahoney; sponsors Denis Leahey, Anna Leahey
Record exhibit
Dempsey 1914–1918
This old record gives information about the person or family named here.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
James | Leahey | ... | 06/01/1914 | 83 W 12th St. | ... | John/US | Margaret Mahoney/US | HCCC | Aged 28y, Born US, Married, Occupation train operator, Buried in Block N, Letter A, N. 20154. | Margaret | Leahey | ... | 05/20/1914 | 83 W 12th St. | ... | James/US | Barbara Brennan/US | HCCC | Aged 11m, Born US. | Hanorah | Hedley | ... | 12/04/1917 | 23 W 8th St. | ...Show the full recordHide the full recordFull record, about 250 words
| Dennis Leahey/Ire | Ann Galvin/Ire | HCCC | Aged 38y, Born US, Married, Ordered by John Hedley. | Block N, Letter A, N. 20154, | Blk-D Sec-A Gr-74 1B | Owen/Ire | Bridget Jones/Ire | Owen/Ire | Bridget Jones/Ire | James | Leahey | John/US | Margaret Mahoney/US | Aged 28y, Born US, Married, Occupation train operator, Buried in Block N, Letter A, N. 20154 | James/US | Barbara Brennan/US | James/US | Barbara Brennan/US | Aged 28y, Born US, Married, Occupation train operator | Aged 28y | Occupation train operator | James | Leahey | John/US | Margaret Mahoney/US | James | Leahey | ... | 06/01/1914 | 83 W 12th St. | ... | John/US | Margaret Mahoney/US | HCCC | Aged 28y, Born US, Married, Occupation train operator, Buried in Block N, Letter A, N. 20154. | Margaret | Leahey | ... | 05/20/1914 | 83 W 12th St. | ... | James/US | Barbara Brennan/US | HCCC | Aged 11m, Born US. | James | Leahey | ... | 06/01/1914 | 83 W 12th St. | ... | John/US | Margaret Mahoney/US | HCCC | Aged 28y, Born US, Married, Occupation train operator, Buried in Block N, Letter A, N. 20154. | Margaret | Leahey | ... | 05/20/1914 | 83 W 12th St. | ... | James/US | Barbara Brennan/US | HCCC | Aged 11m, Born US. | Margaret | Leahey | James/US | Barbara Brennan/US | Aged 11m, Born US | CHIL | June 10 - 1886 | Patrick Powers | Margaret | Leahey | James/US | Barbara Brennan/US
Record exhibit
Find a Grave memorial 184188835 and photographed Leahey monument
This old record gives information about the person or family named here.
Partly proved
Verbatim transcription currently held in this archive — reproduced in full.
John Leahey | Oct 1861 | 27 Aug 1887 (aged 25) | Holy Name Cemetery and Mausoleum, Jersey City, Hudson County, New Jersey, USA | Blk-Y Sec-A Gr-18 1A | Parents Dennis C Leahey Sr 1837–1907; Ann Galvin Leahey 1845–1919 | Spouse Margaret Mahoney Hennessey 1867–1910 | Children James Dennis Leahey 1886–1914 | Family links: Parents: Dennis C Leahey Sr 1837–1907; Ann Galvin Leahey 1845–1919. Spouse:Show the full recordHide the full recordFull record, about 150 words
Margaret Mahoney Hennessey 1867–1910 (m. 1885). Siblings: James J Leahey 1864–1947; Matthew Sylvester Leahy 1866–1934; Dennis Charles Leahey Sr 1867–1957; Francis John Leahey 1868–1913; Anna Bridget ‘Annie’ Leahey Collins 1870–1905; Malachy Leahy 1870–1960; Catherine Theresa Leahey 1874–1955; Mary Ellen H Leahey Gorman 1875–1944; Peter Vincent Leahey 1876–1950; Hanorah Matilda Leahey Hedley 1879–1917; Michael Joseph Leahey 1880–1938. Child: James Dennis Leahey 1886–1914. | Inscription: JOHN LEAHEY / DIED AUG. 30, 1887 / DENNIS C. LEAHEY SR. / DIED APR. 26, 1907
Record exhibit
1860 United States census — Dennis and Ann Lahy/Lehy in Syracuse First Ward
A census is a government list of the people who were living in a home.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
Dennis Lahy/Lehy | 23 | Day Laborer | Ireland | [married within the year]; Ann | 26 | Ireland | [married within the year]
Record exhibit
1900 United States census — Dennis and Ann Leahy in Bayonne
A census is a government list of the people who were living in a home.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
Dennis Leahy | Mar 1838 | 62 | Married 40 years; Ann Leahy | Apr 1845 | 55 | Married 40 years | Mother of 18 children, 11 living
Record exhibit
Engineering and Mining Journal — harbor coal-freight rate (28 July 1877)
This old record gives information about the person or family named here.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
Freight by the boats of the companies from Hoboken, Rondout, Port Johnston, Weehawken, South Amboy and Perth Amboy to New York City and vicinity 50c. per ton.
Record exhibit
The Young America, 17 F. 253 — Port Johnson coal-barge tow (1879)
This old record gives information about the person or family named here.
Partly proved
Verbatim transcription currently held in this archive — reproduced in full.
on their way from Port Johnson to New York | The two barges were part of a tow of 10 boats which left the “Stakes” near Port Johnson at about 2 o'clock P. M.
Record exhibit
U.S. Navy Department coaling survey — Port Johnson (1909)
This old record gives information about the person or family named here.
Proved by a record
Verbatim transcription currently held in this archive — reproduced in full.
Port Johnson, N.J. ... Large supply. Anthracite coal. $1.50 to $5.06 f. o. b. in vessels or lighters at company's wharf.
Historical context
These background articles explain the places, work, and events in this entry.
Bayonne and the Industrial Waterfront, 1870–1920
The Bayonne in these family records was a new city built around water, rails and heavy industry. Bayonne Township was formed only in 1861, uniting older settlements on Bergen Neck; it became a city in 1869. The…
What Sponsors and Witnesses Can Tell Us
Catholic registers often preserve the people standing just outside a family photograph. A baptism normally names the child, parents, date and sponsors or godparents; a marriage normally names the couple and wit…
Reading Irish Civil Registration
The year 1864 is the dividing line in this family’s Irish paper trail. Civil registration began in 1845 for non-Catholic and civil marriages, but from 1 January 1864 the law required registration of all births,…
Farmers and Labourers in North Cork
Two words in the Cork records—“farmer” and “labourer”—describe different positions in the same rural economy. When John Fitzgerald married Margaret Fraher at Kildorrery in 1870, the register called John, his fa…
The Irish Road to Ipswich, Queensland
Most branches on this site point toward New York or New Jersey. The Hickey–McGreevy–McGuire cluster points in the opposite direction, to Ipswich, Queensland. The Australian evidence is uneven: cemetery records …
A Train Operator in Bayonne, 1914
James D. Leahey’s funeral entry records a compact working life: married, American-born, age twenty-eight, living at 83 West 12th Street in Bayonne, occupation “train operator.” He died on 1 June 1914, twelve da…
What we still don't know
- Why does the cemetery index say Ireland while the 1880 census says New York?
- Can a marriage record further document Margaret Mahoney?
- Why does the cemetery index give Ireland as birthplace while the 1880 census gives New York?
- Obtain full records identifying Margaret Mahoney, named with John as James D. Leahey’s parents.
- Find a Grave types 27 August 1887, while the photographed monument reads 30 August 1887 and the civil index also gives 27 August. Preserve both dates until an original death return resolves the discrepancy.
- John’s rank, employer, vessel, cargo and route remain unknown; the 1880 census says only “On Boat,” and Dennis’s Port Johnson route cannot be inherited from their shared household.
- [HOW TO GET THE CAUSE] Nothing here records what he died of at twenty-six. His death on 30 August 1887 falls before New Jersey newspapers are usefully indexed for this family, so the certificate is the route: New Jersey State Archives, Hudson County, 1887. It would also settle the Holy Name card's unexplained “Remarks: Sept. 1/87”, which is his burial date and may mark the grave's first use — the same grave his father was laid in twenty years later.
References
- [1] 1880 United States census: Dennis Leahey householdBack to citation 1a Back to citation 1b Back to citation 1c Back to citation 1d
- [2] Memorial and grave photographsBack to citation 2a Back to citation 2b
- [3] Holy Name Cemetery interment index: John LeahyBack to citation 3a Back to citation 3b
- [4] register page 55 PDFBack to citation 4
- [5] Dempsey 1914–1918Back to citation 5
- [6] Find a Grave memorial 184188835 and photographed Leahey monumentBack to citation 6a Back to citation 6b
- [7] 1860 United States census — Dennis and Ann Lahy/Lehy in Syracuse First WardBack to citation 7a Back to citation 7b
- [8] 1900 United States census — Dennis and Ann Leahy in BayonneBack to citation 8
- [9] Engineering and Mining Journal — harbor coal-freight rate (28 July 1877)Back to citation 9a Back to citation 9b
- [10] The Young America, 17 F. 253 — Port Johnson coal-barge tow (1879)Back to citation 10
- [11] U.S. Navy Department coaling survey — Port Johnson (1909)Back to citation 11