JB
James Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this James Brennan across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents John & Mary — first a head (b.~1896), then head of a 5-person household.
Age 44
b. ~1896
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | NYC |
| 1935 Residence (County) | New York |
| Additional Details | |
| Occupation | Chauffer |
| Industry | Trucking |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 420 |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Chauffer |
| Township / Ward | Nyc |
| Est. Birth Year | ~1896 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Helen Brennan | Daughter | — | 16 | ~1924 |
| Margaret Brennan | Daughter | — | 20 | ~1920 |
| James Brennan | Head | — | 44 | ~1896 |
| James Brennan | Son | — | 23 | ~1917 |
| Mary Brennan | Spouse | — | 42 | ~1898 |
Census Appearances
1920
New York, …
Son, age 21
New York, New York · implied b. ~1899 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Son, age 34
New York, New York · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Chauffeur |
| Industry | city street clean. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Head, age 44
New-York-County, New York · implied b. ~1896 — 5 household members
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | NYC |
| 1935 Residence (County) | New York |
| Occupation | Chauffer |
| Industry | Trucking |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 420 |
| Highest Grade | No 7 |
| 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 James Brennan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Brennan (~0.92 confidence) and mother Mary Brennan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Brennan
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Mary Brennan
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Brennan
Head · 1940 · age 44 · b. ~1896 · 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 — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02631-00004)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Cavanaugh | 48 | Head | Watchman | New York |
| 2 | James Brennan THIS PERSON | 44 | Head | Chauffer | New York |
| 3 | Mary Brennan | 42 | Wife | Housewife | New York |
| 4 | Margaret Brennan | 20 | Daughter | Card Maker | New York |
| 5 | James Jr Brennan | 23 | Son | Packer | New York |
| 6 | Helen Brennan | 16 | Daughter | — | New York |
| 7 | Harry Hallahan | 44 | Head | Advertising | New York |
| 8 | Dorothy Hallahan | 37 | Wife | Social Worker | New York |
| 9 | Cynthia Hallahan | 2 | Daughter | — | New York |
| 10 | William Wells | 39 | Head | Dept Head | New York |
| 11 | Mary Wells | 45 | Wife | — | Ohio |
| 12 | Theodore Michels | 27 | Head | Laborer | New York |
| 13 | Stuart Michels | 0 | Son | — | New York |
| 14 | Ruth Michels | 30 | Wife | — | New York |
| 15 | Louisa Peek | 35 | Head | — | Georgia |
| 16 | Erwin Schoolbauer | 47 | Head | Artist | Austria |
| 17 | Verna Schoolbauer | 45 | Wife | — | New York |
| 18 | Morris Louis | 26 | Head | Artist | California |
| 19 | William Kearnies | 26 | Head | Writer | Mississippi |
| 20 | Jane Kearnies | 23 | Wife | Weaver | Illinois |
| 21 | Peter Brady | 40 | Head | Longshoreman | Irish Free State |
| 22 | Bessie Brady | 34 | Wife | — | Irish Free State |
| 23 | Peter Jr Brady | 13 | Son | — | New York |
| 24 | John Brady | 11 | Son | — | New York |
| 25 | Kathleen Brady | 9 | Daughter | — | New York |
| 26 | Theodore Michael | 38 | Head | Bartender | New York |
| 27 | Jacob Bergan | 55 | Head | Carpenter | Austria |
| 28 | Rose Bergan | 51 | Wife | Janitor | Austria |
| 29 | Jacob Jr Bergan | 21 | Son | New Worker | New York |
| 30 | Joseph Lysaght | 37 | Head | Superintendent | New York |
| 31 | Catherine Lysaght | 29 | Wife | — | New York |
| 32 | Joseph Lysaght | 6 | Son | — | New York |
| 33 | James Lysaght | 1 | Son | — | New York |
| 34 | Jane Lynch | 66 | Head | — | Irish Free State |
| 35 | Mary Lynch | 33 | Daughter | Telephone Operator | New York |
| 36 | Marilyn Lynch | 7 | Daughter | — | New York |
| 37 | Jane Ann Lynch | 4 | Grand Daughter | — | New York |
| 38 | Michael Lynch | 26 | Son | — | New York |
| 39 | Albert Durous | 50 | Head | — | New York |
| 40 | Margaret Durous | 46 | Wife | — | New York |
Pedigree Summary
James
Gen 1 · 2 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)