TB
Thomas Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Thomas Brennan across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents James & Thomas — first a head (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Brennan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | NEW YORK |
| 1935 Residence (County) | NEW YORK |
| Additional Details | |
| Occupation | Machinist |
| Industry | Spark Plugs |
| Class of Worker | PW |
| Hours Worked | 39 |
| Income (1939) | 400 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Machinist |
| Township / Ward | New York |
| Est. Birth Year | ~1916 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Brennan | Son | — | 4 | ~1936 |
| Florence Brennan | Daughter | — | 1 | ~1939 |
| Helen Brennan | Spouse | — | 20 | ~1920 |
| Thomas Brennan | Head | — | 24 | ~1916 |
Census Appearances
1920
New York, …
Son, age 3
New York, New York · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Son, age 14
New York, New York · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Head, age 24
New-York-County, New York · implied b. ~1916 — 4 household members
| Surname | Brennan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | NEW YORK |
| 1935 Residence (County) | NEW YORK |
| Occupation | Machinist |
| Industry | Spark Plugs |
| Class of Worker | PW |
| Hours Worked | 39 |
| Income (1939) | 400 |
| Highest Grade | H 2 |
| 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 2 locations, using XGBoost record linkage. Identified parents: father James Coon (~0.92 confidence) and father Thomas Brennan (~0.92 confidence) and mother Mary Brennan (~0.92 confidence) and mother Minnie Coon (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Coon
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Thomas Brennan
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mary Brennan
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Minnie Coon
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Brennan
Head · 1940 · age 24 · b. ~1916 · 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-t0627-02644-00841)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Gueydan | 36 | Head | Travel Agent | France |
| 42 | Frances Gueydan | 29 | Wife | Secretary | New York |
| 43 | Jennie B. Halsey | 62 | Head | Housewife | Connecticut |
| 44 | Hugo Schranz | 42 | Head | Waiter | Austria |
| 45 | Anna Schranz | 42 | Wife | Housewife | Austria |
| 46 | Hugo Jr. Schranz | 16 | Son | — | New York |
| 47 | Harriott S. Collier | 31 | Head | Travel Agent | New York |
| 48 | Carol D. Pierce | 38 | Partner | Travel Agent | Massachusetts |
| 49 | Nicholas Michelson | 42 | Head | Physician | Latvia |
| 50 | Franziska Michelson | 38 | Wife | Teacher | New York |
| 51 | Gertrud Michelson | 10 | Daughter | — | New York |
| 52 | Paul Rosenfeld | 49 | Head | Author | New York |
| 53 | John Sr. O'Donnell | 65 | Head | Operator | Ireland |
| 54 | Sarah O'Donnell | 62 | Wife | Housewife | Scotland |
| 55 | John O'Donnell | 31 | Son | Superintendent | Scotland |
| 56 | Gerard O'Donnell | 21 | Son | Messenger | Scotland |
| 57 | Anna Skerritt | 46 | Head | Seamstress | England |
| 58 | Benjamin Smith | 70 | Head | Batteryman | Pennsylvania |
| 59 | John J. Monahan | 42 | Head | Superintendent | New York |
| 60 | Katherine Monahan | 48 | Wife | Housewife | New York |
| 61 | Ernst Nienstedt | 75 | Head | Packer | Germany |
| 62 | Louise Nienstedt | 69 | Wife | Housewife | New Jersey |
| 63 | Louis Herzog | 42 | Head | Roofer | New York |
| 64 | Adeline Herzog | 36 | Wife | Housewife | New York |
| 65 | Florence Herzog | 16 | Daughter | — | New York |
| 66 | James Mcgee | 42 | Head | Wpa Clerk | New York |
| 67 | Grace Mcgee | 40 | Wife | Housewife | New York |
| 68 | Thomas Brennan THIS PERSON | 24 | Head | Machinist | New York |
| 69 | Helen Brennan | 20 | Wife | Operator | New York |
| 70 | Thomas Brennan | 4 | Son | — | New York |
| 71 | Florence Brennan | 1 | Daughter | — | New York |
| 72 | Thomas Harris | 44 | Head | Quartermaster | New York |
| 73 | Anna Harris | 36 | Wife | Housewife | New York |
| 74 | Bernard Harris | 19 | Son | — | New York |
| 75 | Margaret Harris | 14 | Daughter | — | New York |
| 76 | Lucy Eastwood | 41 | Head | Housewife | New York |
| 77 | Catherine Eastwood | 20 | Daughter | Clerk | New York |
| 78 | Joseph Eastwood | 19 | Son | Office Boy | New York |
| 79 | Elizabeth Mcgrath | 55 | Head | Packer | New York |
| 80 | Catherine Nugent | 44 | Head | Folder | New York |
Pedigree Summary
Thomas
Gen 1 · 4 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)