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Thomas Leonard — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Thomas Leonard across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents Michael & Michael — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Leonard |
| Given Name | Thomas F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Engineering Contractors |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1150 |
| Highest Grade | Hs 4 |
| 1935 Residence | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Bookkeeper |
| Township / Ward | New York City |
| Est. Birth Year | ~1917 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Kathleen Vollmuth | Daughter | — | 26 | ~1914 |
| Michael Leonard | Head | — | 60 | ~1880 |
| Walter Vollmuth | Other | — | 27 | ~1913 |
| Thomas Leonard | Son | — | 23 | ~1917 |
| Anne Leonard | Daughter | — | 19 | ~1921 |
Census Appearances
1920
New York, …
Son, age 2
New York, New York · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Son, age 13
Kings, New York · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Son, age 23
Kings-County, New York · implied b. ~1917 — 5 household members
| Surname | Leonard |
| Given Name | Thomas F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Occupation | Bookkeeper |
| Industry | Engineering Contractors |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1150 |
| Highest Grade | Hs 4 |
| 1935 Residence | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Thomas Leonard across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Michael Leonard (~0.92 confidence) and father Michael Leonard (~0.92 confidence) and father Thomas Leonard (~0.92 confidence) and mother Anna Leonard (~0.92 confidence) and mother Catherine Leonard (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Leonard
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Michael Leonard
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Thomas Leonard
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Anna Leonard
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Catherine Leonard
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Leonard
Son · 1940 · age 23 · b. ~1917 · New York
★ You are viewing this record
Sibling
Anne Leonard
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Vollmuth
Sibling · 1940 · age 26
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
1940 US Federal Census — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02580-00127)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward J. Leonard | 28 | Head | Pipe Fitter | New York |
| 2 | Gertrude J. Leonard | 26 | Wife | — | New York |
| 3 | Constance M. Leonard | 5 | Daughter | — | New York |
| 4 | Michael J. Leonard | 60 | Head | Collector | Irish Free State |
| 5 | Anne M. Leonard | 19 | Daughter | New Worker | New York |
| 6 | Thomas F. Leonard THIS PERSON | 23 | Son | Bookkeeper | New York |
| 7 | Walter L. Vollmuth | 27 | Son-in-law | Interior Decorator | New York |
| 8 | Kathleen T. Vollmuth | 26 | Daughter | — | New York |
| 9 | Robert A. Joyce | 31 | Head | Fireman | New York |
| 10 | Marie F. Joyce | 29 | Wife | — | New York |
| 11 | Helen M. Joyce | 9 | Daughter | — | New York |
| 12 | Robert J. Joyce | 8 | Son | — | New York |
| 13 | Virginia C. Joyce | 6 | Daughter | — | New York |
| 14 | James A. Joyce | 5 | Son | — | New York |
| 15 | Marie Joyce | 4 | Daughter | — | New York |
| 16 | Dorothy A. Joyce | 2 | Daughter | — | New York |
| 17 | Loretta Joyce | 2 | Daughter | — | New York |
| 18 | Daniel J. Regan | 38 | Head | Stationary Fireman | New York |
| 19 | Helen T. Regan | 34 | Wife | — | New York |
| 20 | Daniel Regan | 8 | Son | — | New York |
| 21 | William Regan | 6 | Son | — | New York |
| 22 | John Regan | 3 | Son | — | New York |
| 23 | Rosemary Regan | 1 | Daughter | — | New York |
| 24 | John J. Leslie | 42 | Head | Porter | Irish Free State |
| 25 | Bridget Leslie | 45 | Wife | — | Irish Free State |
| 26 | Cecilia T. Leslie | 12 | Daughter | — | New York |
| 27 | Mary V. Leslie | 9 | Daughter | — | New York |
| 28 | Margaret T. Leslie | 1 | Daughter | — | New York |
| 29 | Catherine Hayes | 53 | Head | — | New York |
| 30 | William J. Hayes | 25 | Son | Elevator Operator | New York |
| 31 | Harry R. Glover | 70 | Head | Shipping Clerk | New York |
| 32 | Hulda P. Glover | 46 | Wife | — | New York |
| 33 | Harry R. Glover | 21 | Son | Clerk | New York |
| 34 | Edna F. Glover | 19 | Daughter | Saleslady | New York |
| 35 | Joseph A. F. Reilly | 39 | Head | Handyman | New York |
| 36 | Margaret Reilly | 44 | Wife | — | Canada-English |
| 37 | Therese M. Reilly | 9 | Daughter | — | New York |
| 38 | Donald E. Reilly | 3 | Son | — | New York |
| 39 | John J. Reilly | 70 | Head | — | Irish Free State |
| 40 | Annie E. Reilly | 73 | Wife | — | Irish Free State |
Pedigree Summary
Thomas + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)