TB
Thomas Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Thomas Brennan across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents Michael & Thomas — first a head (b.~1902), then head of a 6-person household.
Age 38
b. ~1902
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Brennan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | Salesman |
| Industry | Cemetery |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 768 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Salesman |
| Township / Ward | New York City |
| Est. Birth Year | ~1902 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Brennan | Head | — | 38 | ~1902 |
| Margaret Brennan | Daughter | — | 2 | ~1938 |
| Barbara Brennan | Daughter | — | 5 | ~1935 |
| Thomas Brennan | Son | — | ~1940 | |
| Mary Brennan | Daughter | — | 7 | ~1933 |
| Mary Brennan | Spouse | — | 34 | ~1906 |
Census Appearances
1920
New York, …
Son, age 17
New York, New York · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | Advertising |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Son, age 27
Kings, New York · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Police Officer |
| Industry | Police Dept |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Head, age 38
Kings-County, New York · implied b. ~1902 — 6 household members
| Surname | Brennan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Occupation | Salesman |
| Industry | Cemetery |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 768 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Brennan across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Michael Brennan (~0.92 confidence) and father Thomas Brennan (~0.92 confidence) and mother Mary Brennan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Brennan
b. ~1865
Source father
● Household
· direct · ~0.92
Father
Thomas Brennan
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mary Brennan
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Brennan
Head · 1940 · age 38 · b. ~1902 · New York
★ You are viewing this record
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-t0627-02605-00478)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Flanery | 29 | Brother in law | Grocery Clerk | Free State Ireland |
| 2 | Bernard Flanery | 28 | Brother in law | Manager | Ireland |
| 3 | Allis Brady | 59 | Head | — | Ireland |
| 4 | Frank Brady | 44 | Son | Accountant | New York |
| 5 | Mary Butler | 43 | Sister | Factory Hand | New York |
| 6 | Elizabeth Butler | 21 | Niece | Operator | Georgia |
| 7 | John H Smith | 73 | Head | Repairman | New York |
| 8 | Lillian Smith | 48 | Wife | — | England |
| 9 | Jane Smith | 19 | Daughter | Bookkeeper | New York |
| 10 | Arthur Russ | 57 | Head | Timekeeper | New York |
| 11 | Elizabeth Russ | 72 | Wife | — | New York |
| 12 | Thomas Brennan THIS PERSON | 38 | Head | Salesman | New York |
| 13 | Mary Brennan | 34 | Wife | — | New York |
| 14 | Mary F Brennan | 7 | Daughter | — | New York |
| 15 | Barbara Brennan | 5 | Daughter | — | New York |
| 16 | Margaret Brennan | 2 | Daughter | — | New York |
| 17 | Thomas Brennan | 0 | Son | — | New York |
| 18 | John Gallagher | 50 | Head | Fireman | Ireland |
| 19 | Anne Gallagher | 45 | Wife | — | Ireland |
| 20 | Madeline Gallagher | 10 | Daughter | — | New York |
| 21 | Roch Theresa | None | Sister | — | — |
| 22 | Anthony Giacone | 32 | Head | Salesman | New York |
| 23 | Ephigenia Giacone | 33 | Wife | — | New York |
| 24 | Ralph Giacone | 13 | Son | — | New York |
| 25 | Julia Baldassare | 50 | Head | — | New York |
| 26 | Melania Baldassare | 49 | Wife | — | New York |
| 27 | Walter Keating | 50 | Head | Machinist | New York |
| 28 | Regina Keating | 45 | Wife | — | New York |
| 29 | Henry Baker | 35 | Head | Clerical | New York |
| 30 | Fay Baker | 34 | Wife | — | New York |
| 31 | Edwin Baker | 3 | Son | — | New York |
| 32 | Charles Anderson | 61 | Head | Superintendent | New York |
| 33 | Rose Anderson | 45 | Wife | — | New York |
| 34 | Elizabeth Barney | 25 | Boarder | Typist | New York |
| 35 | Joseph Hayden | 34 | Head | Manager | New York |
| 36 | Vera Hayden | 34 | Wife | Secretary | New York |
| 37 | Hyman Braumoff | 40 | Head | Salesman | New York |
| 38 | Lilly Braumoff | 34 | Wife | Counter Clerk | New York |
| 39 | George Bucksmith | 35 | Head | Policeman | New York |
| 40 | Margaret Bucksmith | 34 | Wife | — | New York |
Pedigree Summary
Thomas
Gen 1 · 3 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)