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Thomas Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Thomas Brennan across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 8-person household.
Age 52
b. ~1888
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Brennan |
| Given Name | Thomas J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Private Family |
| Industry | PW |
| Class of Worker | 2086 |
| Highest Grade | H 2 |
| 1935 Residence | 60 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Private Family |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1888 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Ellen Brennan | Daughter | — | 23 | ~1917 |
| Minnie Walsh | Other | — | 74 | ~1866 |
| William Brennan | Son | — | 21 | ~1919 |
| Thomas Brennan | Head | — | 52 | ~1888 |
| Mollie Brennan | Spouse | — | 45 | ~1895 |
| Michel Fitzgerald | Other | — | 36 | ~1904 |
| Anna Brennan | Daughter | — | 12 | ~1928 |
| Mary Brennan | Daughter | — | 16 | ~1924 |
Census Appearances
1920
Philadelphia, Pennsylvania
Head, age 32
Philadelphia, Pennsylvania · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Chauffeur |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Head, age 42
Philadelphia, Pennsylvania · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 24 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Chauffeur |
| Industry | Private Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Head, age 52
Philadelphia-County, Pennsylvania · implied b. ~1888 — 8 household members
| Surname | Brennan |
| Given Name | Thomas J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Philadelphia |
| Occupation | Private Family |
| Industry | PW |
| Class of Worker | 2086 |
| Highest Grade | H 2 |
| 1935 Residence | 60 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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.
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This person
Anchor record
Thomas Brennan
Head · 1940 · age 52 · b. ~1888 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03707-00346)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eileen Brennan | 1 | Daughter | — | Pennsylvania |
| 42 | Thomas J Brennan THIS PERSON | 52 | Head | Private Family | Pennsylvania |
| 43 | Mollie Brennan | 45 | Wife | — | Pennsylvania |
| 44 | Ellen Brennan | 23 | Daughter | Candy Factory | Pennsylvania |
| 45 | William Brennan | 21 | Son | — | Pennsylvania |
| 46 | Mary Brennan | 16 | Daughter | — | Pennsylvania |
| 47 | Anna Brennan | 12 | Daughter | — | Pennsylvania |
| 48 | Michel J Fitzgerald | 36 | Brother-in-law | Pw | Irish Free State |
| 49 | Minnie Walsh | 74 | Aunt | — | Irish Free State |
| 50 | William King | 50 | Head | Quartermaster Department | Pennsylvania |
| 51 | James Sr. King | 47 | Brother | Retail Grocery Trade | Pennsylvania |
| 52 | James Jr. King | 22 | Nephew | — | Pennsylvania |
| 53 | Mary Seiberson | 82 | Mother | — | Pennsylvania |
| 54 | Barney S Killian | 34 | Head | Retail Bakery | North Carolina |
| 55 | Mamie Killian | 37 | Wife | — | South Carolina |
| 56 | John J. Ferry | 33 | Head | Steam Railroad Co. | Pennsylvania |
| 57 | Margaret Ferry | 29 | Wife | — | Pennsylvania |
| 58 | Margaret Ferry | 6 | Daughter | — | Pennsylvania |
| 59 | Rosemarie Ferry | 5 | Daughter | — | Pennsylvania |
| 60 | Helen Ferry | 4 | Daughter | — | Pennsylvania |
| 61 | Rita P. Ferry | 0 | Daughter | — | Pennsylvania |
| 62 | John Randall | 40 | Head | Steam Railroad Co. | Pennsylvania |
| 63 | Catherine Randall | 36 | Wife | — | Pennsylvania |
| 64 | Alice Randall | 17 | Daughter | — | Pennsylvania |
| 65 | Catherine Randall | 15 | Daughter | — | Pennsylvania |
| 66 | John Randall | 12 | Son | — | Pennsylvania |
| 67 | Margaret Randall | 8 | Daughter | — | Pennsylvania |
| 68 | Edith Tallon | 44 | Head | Quartermaster Department | Pennsylvania |
| 69 | Jacob Haage | 33 | Head | Gas Company | Pennsylvania |
| 70 | Margaret Haage | 33 | Wife | — | Pennsylvania |
| 71 | Charles Haage | 11 | Son | — | Pennsylvania |
| 72 | John Haage | 9 | Son | — | Pennsylvania |
| 73 | Mary Haage | 5 | Daughter | — | Pennsylvania |
| 74 | Joseph Cunningham | 29 | Head | Cafe | Pennsylvania |
| 75 | Genevieve Cunningham | 28 | Wife | — | Pennsylvania |
| 76 | James Mcgrath | 26 | Head | Printing Shop | Pennsylvania |
| 77 | Winifred Mcgrath | 32 | Wife | — | Delaware |
| 78 | Winifred Mcgrath | 1 | Daughter | — | Pennsylvania |
| 79 | James Godfrey | 26 | Head | W.P.A. | Pennsylvania |
| 80 | Dorothy Godfrey | 24 | Wife | — | New Jersey |
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)