JB
John Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this John Brennan across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 9-person household.
Age 68
b. ~1872
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Manhattan |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 332 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Mechanic |
| Township / Ward | Manhattan |
| Est. Birth Year | ~1872 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Frances Brennan | Daughter | — | 28 | ~1912 |
| Helen Brennan | Daughter | — | 25 | ~1915 |
| John Brennan | Head | — | 68 | ~1872 |
| Michael Keenan | Other | — | 12 | ~1928 |
| Julia Keenan | Other | — | 14 | ~1926 |
| James Brennan | Son | — | 23 | ~1917 |
| George Brennan | Son | — | 33 | ~1907 |
| Thomas Brennan | Son | — | 21 | ~1919 |
| Frances Brennan | Spouse | — | 62 | ~1878 |
Census Appearances
1920
New York, …
Head, age 45
New York, New York · implied b. ~1875 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | English |
| Mother's Birthplace | Ireland |
| Occupation | Watchman Edison Co. |
| Industry | W |
| Class of Worker | 1892 |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | R |
| Birthplace (normalized) | ireland |
1930
New York, …
Head, age 57
New York, New York · implied b. ~1873 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Foreman |
| Industry | NYRR |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 65 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
New-York-County, New …
Head, age 68
New-York-County, New York · implied b. ~1872 — 9 household members
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Manhattan |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 332 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Brennan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Brennan
Head · 1940 · age 68 · b. ~1872 · 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-t0627-02641-00891)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry D Hassel | 45 | Head | Cutter | New York |
| 2 | Anna Hassel | 45 | Wife | — | Pennsylvania |
| 3 | Leonard Hassel | 17 | Son | — | New York |
| 4 | Mildred Levy | 24 | Lodger | Saleslady | New York |
| 5 | Annette Baxter | 32 | Lodger | Hunter | New York |
| 6 | Pearl Baxter | 11 | Piece | — | New York |
| 7 | Winifred Sheehan | 63 | Head | — | New York |
| 8 | James Kenny | 30 | Lodger | Trimmer | New York |
| 9 | Maria Hunter | 45 | Lodger | — | New York |
| 10 | Samuel Thompson | 50 | Lodger | — | New York |
| 11 | John O'Donnell | 53 | Lodger | — | New York |
| 12 | John Brennan THIS PERSON | 68 | Head | Mechanic | Ireland |
| 13 | Frances Brennan | 62 | Wife | — | New York |
| 14 | George Brennan | 33 | Son | Clerk | New York |
| 15 | James Brennan | 23 | Son | Driver | New York |
| 16 | Thomas Brennan | 21 | Son | Plumber | New York |
| 17 | Frances Brennan | 28 | Daughter | Clerk | New York |
| 18 | Helen Brennan | 25 | Daughter | Operator | New York |
| 19 | Julia Keenan | 14 | Niece | — | New York |
| 20 | Michael Keenan | 12 | Nephew | — | New York |
| 21 | Louis W Haverty | 64 | Head | Salesman | Indiana |
| 22 | Julia E Haverty | 63 | Wife | — | Indiana |
| 23 | Louis E Haverty | 40 | Son | Lawyer | Indiana |
| 24 | James E Simons | 75 | Head | — | Belgium |
| 25 | Jennie E Simons | 73 | Wife | — | New York |
| 26 | Lizzie Poles | 72 | Head | — | New York |
| 27 | John Cole | 50 | Lodger | Operator | New York |
| 28 | Arthur Borton | 40 | Lodger | Clerk | New York |
| 29 | Burton Albom | 19 | Lodger | Artist | New York |
| 30 | Julian Berg | 32 | Head | Clerk | Poland |
| 31 | Juanita Berg | 39 | Wife | — | Puerto Rico |
| 32 | Burton Maisnet | 24 | Lodger | Tractor Maker | Puerto Rico |
| 33 | John Moore | 64 | Head | Salesman | New York |
| 34 | Hannah Moore | 61 | Wife | — | New York |
| 35 | Marjorie Moore | 33 | Daughter | Stenographer | New York |
| 36 | Doris Moore | 31 | Daughter | Typist | New York |
| 37 | Regina Moore | 24 | Daughter | Operator | New York |
| 38 | Frank Moore | 20 | Son | Clerk | New York |
| 39 | Burton Moore | 17 | Son | — | New York |
| 40 | James Moore | 15 | Son | — | New York |
Related Census Records
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)