JL
John Leahy — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this John Leahy across the 1900 and 1910 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1893), then head of a 8-person household.
Age 17
b. ~1893
Male
Son
Born: Connecticut
Single
1910 Census Record Details
| Census Year | 1910 |
| Location | Suffolk, Massachusetts |
| Surname | Leahy |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Teamster |
| Industry | Trucking Co. |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
| Occupation | Teamster |
| Township / Ward | Boston |
| Est. Birth Year | ~1893 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
8 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Michael Leahy | Son | — | 11 | ~1899 |
| Margaret Leahy | Daughter | — | 15 | ~1895 |
| John Leahy | Son | — | 17 | ~1893 |
| Garrett Leahy | Head | — | 42 | ~1868 |
| Ella Leahy | Daughter | — | 14 | ~1896 |
| Ruth Leahy | Daughter | — | 3 | ~1907 |
| Norah Leahy | Spouse | — | 40 | ~1870 |
| Thomas Leahy | Son | — | 9 | ~1901 |
Census Appearances
1900
Suffolk, Massachusetts
Son, age 10
Suffolk, Massachusetts · implied b. ~1890 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leahy |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Birth Month | Jan |
| Birth Year | 1890 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | At School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1910
Suffolk, Massachusetts
Son, age 17
Suffolk, Massachusetts · implied b. ~1893 — 8 household members
| Surname | Leahy |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Teamster |
| Industry | Trucking Co. |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Leahy across 2 US Census years (1900 and 1910) in Suffolk, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
John Leahy
Son · 1910 · age 17 · b. ~1893 · Massachusetts
★ You are viewing this record
Sibling
Margaret Leahy
Sibling · 1910 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Leahy
Sibling · 1910 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Leahy
Sibling · 1910 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Leahy
Sibling · 1910 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Leahy
Sibling · 1910 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1910 US Federal Census — Suffolk, Massachusetts
Open full size
1910 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po621unit:0441)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Garrett Leahy | 42 | Head | Laborer | Ireland |
| 2 | Norah Leahy | 40 | Wife | — | Ireland |
| 3 | John J Leahy THIS PERSON | 17 | Son | Teamster | Connecticut |
| 4 | Margaret Leahy | 15 | Daughter | — | Massachusetts |
| 5 | Ella Leahy | 14 | Daughter | — | Massachusetts |
| 6 | Michael J Leahy | 11 | Son | — | Massachusetts |
| 7 | Thomas J Leahy | 9 | Son | — | Massachusetts |
| 8 | Ruth E Leahy | 3 | Daughter | — | Massachusetts |
| 9 | Sophie Vonson | 54 | Head | Laundress | Sweden |
| 10 | Samuel J Martin | 38 | Head | Cabinet Maker | England |
| 11 | Ella B Martin | 31 | Wife | — | Canada |
| 12 | Louis G Martin | 7 | Son | — | Massachusetts |
| 13 | Michael J Mccarthy | 42 | Head | Hostler | Ireland |
| 14 | Nora Mccarthy | 42 | Wife | — | Ireland |
| 15 | Mary A Mccarthy | 20 | Daughter | Stitcher | Massachusetts |
| 16 | James Mccarthy | 19 | Son | Proprietor | Massachusetts |
| 17 | Nora Mccarthy | 17 | Daughter | Box Maker | Ireland |
| 18 | Jeremiah Mccarthy | 11 | Son | — | Massachusetts |
| 19 | Helen Mccarthy | 8 | Daughter | — | Massachusetts |
| 20 | Cornelius Mccarthy | 5 | Son | — | Massachusetts |
| 21 | Alice Mccarthy | 3 | Daughter | — | Massachusetts |
| 22 | Ernest S Hobbs | 29 | Head | Decorator | New Hampshire |
| 23 | Lillian P Hobbs | 20 | Wife | — | Massachusetts |
| 24 | Ashley V Sampson | 55 | Head | Packer | Maine |
| 25 | Margaret Sampson | 52 | Wife | — | Ireland |
| 26 | Arthur H Sampson | 26 | Son | Polisher | Massachusetts |
| 27 | Lola M Sampson | 20 | Daughter | Stitcher | Massachusetts |
| 28 | Lydia Sampson | 17 | Daughter | Stenographer | Massachusetts |
| 29 | William J Gardner | 25 | Head | Printer | New York |
| 30 | Antoinette Gardner | 23 | Wife | — | New York |
| 31 | Irene Gardner | 0 | Daughter | — | New York |
| 32 | Michael Houlihan | 42 | Head | Laborer | Ireland |
| 33 | Elizabeth Houlihan | 35 | Wife | — | Ireland |
| 34 | David Houlihan | 7 | Son | — | Massachusetts |
| 35 | Mary E Houlihan | 3 | Daughter | — | Massachusetts |
| 36 | Matilda S Paetz | 65 | Head | Art Work | Sweden |
| 37 | Annie J Kelly | 54 | Head | — | Massachusetts |
| 38 | Isabella Kelly | 24 | Daughter | Stripper | Massachusetts |
| 39 | Timothy E Kelly | 21 | Son | Lather | Massachusetts |
| 40 | Henry M Kelly | 16 | Son | — | Massachusetts |
| 41 | James Kelly | 40 | Head | Machinist | Ireland |
| 42 | Mary Kelly | 35 | Wife | — | Ireland |
| 43 | Christopher J Kelly | 5 | Son | — | Massachusetts |
| 44 | Mary Kelly | 4 | Daughter | — | Massachusetts |
| 45 | James E Kelly | 2 | Son | — | Massachusetts |
| 46 | Matthew Ginty | 24 | Brother-in-law | Boilermaker | Ireland |
| 47 | Edward Hennelery | 52 | Head | Laborer | Ireland |
| 48 | Mary Hennelery | 48 | Wife | — | Ireland |
| 49 | Thomas J Hennelery | 25 | Son | Teamster | Massachusetts |
| 50 | Edward Hennelery | 22 | Son | Teamster | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1910 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)