TB
Thomas Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Thomas Brennan across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Brennan |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | Courtesy Man |
| Industry | Auto Industry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Courtesy Man |
| Township / Ward | Detroit City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Brennan | Son | — | 24 | ~1916 |
| Patricia Brennan | Daughter | — | 15 | ~1925 |
| Alma Brennan | Spouse | — | 53 | ~1887 |
| Mary Brennan | Daughter | — | 14 | ~1926 |
| Thomas Brennan | Head | — | 54 | ~1886 |
| Elizabeth Brennan | Daughter | — | 21 | ~1919 |
Census Appearances
1920
Wayne, Michigan
Son, age 3
Wayne, Michigan · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Canada |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Son, age 14
Wayne, Michigan · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Son, age 24
Wayne-County, Michigan · implied b. ~1916 — 6 household members
| Surname | Brennan |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Occupation | Courtesy Man |
| Industry | Auto Industry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Thomas Brennan (~0.92 confidence) and father Thomas Brennan (~0.92 confidence) and father Thomas Brennan (~0.92 confidence) and mother Alma Brennan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Brennan
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Thomas Brennan
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Thomas Brennan
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Alma Brennan
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Brennan
Son · 1940 · age 24 · b. ~1916 · Michigan
★ You are viewing this record
Sibling
Mary Brennan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Brennan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Brennan
Sibling · 1940 · age 15
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01881-00624)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Merry Lorenzi | 29 | Head | Assembler | Italy |
| 2 | Mary Lorenzi | 14 | Daughter | — | Illinois |
| 3 | Libero De Paris | 26 | Brother | Assembler | Illinois |
| 4 | Lois De Paris | 22 | Sister-in-law | — | Illinois |
| 5 | Bertha Lee De Paris | 2 | Niece | — | Illinois |
| 6 | William J. Hayman | 45 | Head | Tire Maker | England |
| 7 | Rose Hayman | 44 | Wife | — | Canada |
| 8 | Mabel M. Hubbard | 33 | Head | Time Clerk | Missouri |
| 9 | Marie A. Bailey | 34 | Lodger | Punch Operator | Jersey, Prov. |
| 10 | William Mcfarlane | 32 | Head | Machinist | Michigan |
| 11 | Nellie S. Mcfarlane | 32 | Wife | — | Michigan |
| 12 | Rita Mcfarlane | 9 | Son | — | Michigan |
| 13 | James Mcfarlane | 7 | Son | — | Michigan |
| 14 | Robert Mcfarlane | 6 | Son | — | Michigan |
| 15 | John D. Hasha | 32 | Head | Owner | Albania |
| 16 | Mary Hasha | 25 | Wife | — | Pennsylvania |
| 17 | Eleanor Hasha | 11 | Daughter | — | Pennsylvania |
| 18 | David Hasha | 5 | Son | — | Michigan |
| 19 | Cousin Hafil | None | M | Lunch Room | — |
| 20 | Vincent Valliquette | 49 | Head | 52 | Canada |
| 21 | Mary W. Valliquette | 47 | Wife | — | Canada |
| 22 | Eilane Valliquette | 15 | Daughter | New Worker | Michigan |
| 23 | Carl W. Holm | 24 | Head | Trucker | N. Dakota |
| 24 | Carl Mrs. Holm | 24 | Wife | — | Iowa |
| 25 | Lemuel Montgomery | 51 | Head | Physician | Illinois |
| 26 | Beulah S. Montgomery | 44 | Wife | — | Kentucky |
| 27 | Lemuel Montgomery | 15 | Son | — | Kentucky |
| 28 | Jonas Montgomery | 15 | Son | — | Kentucky |
| 29 | Thomas Brennan | 54 | Head | Physician | Canada |
| 30 | Alma S. Brennan | 53 | Wife | — | Michigan |
| 31 | Thomas J. Brennan THIS PERSON | 24 | Son | Courtesy Man | Michigan |
| 32 | Elizabeth Brennan | 21 | Daughter | Salesman | Michigan |
| 33 | Patricia Brennan | 15 | Daughter | Clerical | Michigan |
| 34 | Mary Jane Brennan | 14 | Daughter | — | Michigan |
| 35 | Ola Cecil | 50 | Head | Manager | Kentucky |
| 36 | Charlie Craig | 41 | Lodger | 40 | Canada |
| 37 | John E. Blastow | 51 | Lodger | Sailor | Maine |
Pedigree Summary
Thomas + 3 siblings
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)