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Thomas Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Thomas Brennan across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1876), then head of a 3-person household.
Age 64
b. ~1876
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Brennan |
| Given Name | Thomas F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Proprietor |
| Industry | Oil Fuel Co. |
| Class of Worker | OA |
| Income (1939) | 1160 |
| Highest Grade | S 8 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Proprietor |
| Township / Ward | Salem City |
| Est. Birth Year | ~1876 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Brennan | Head | — | 64 | ~1876 |
| Catherine Brennan | Spouse | — | 58 | ~1882 |
| Dorothy Brennan | Daughter | — | 25 | ~1915 |
Census Appearances
1920
Essex, Massachusetts
Head, age 42
Essex, Massachusetts · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Salesman |
| Industry | Retail |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Head, age 53
Essex, Massachusetts · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Thomas F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Irish Free State |
| Occupation | Dealer |
| Industry | Ice |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7500 |
| Radio Set | R |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Head, age 64
Essex-County, Massachusetts · implied b. ~1876 — 3 household members
| Surname | Brennan |
| Given Name | Thomas F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Essex |
| Occupation | Proprietor |
| Industry | Oil Fuel Co. |
| Class of Worker | OA |
| Income (1939) | 1160 |
| Highest Grade | S 8 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 64 · b. ~1876 · Massachusetts
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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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01589-00997)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Mcalpine | 9 | Son | — | Massachusetts |
| 2 | Michael J. Buckley | 39 | Head | Assembler | Massachusetts |
| 3 | Teresa M. Buckley | 45 | Wife | — | Massachusetts |
| 4 | Patricia Buckley | 7 | Daughter | — | Massachusetts |
| 5 | Joan Buckley | 7 | Daughter | — | Massachusetts |
| 6 | Paul G. Gurney | 44 | Brother-in-law | Examiner | Massachusetts |
| 7 | Nathan Marder | 44 | Head | Proprietor | Russia |
| 8 | Ida N. Marder | 41 | Wife | — | Russia |
| 9 | Muriel Marder | 17 | Daughter | — | Massachusetts |
| 10 | Callanor Marder | 12 | Daughter | — | Massachusetts |
| 11 | Donald Marder | 8 | Son | — | Massachusetts |
| 12 | Alton F. Grant | 49 | Head | Janitor & Painter | Maine |
| 13 | Blanche D. Grant | 42 | Wife | — | Massachusetts |
| 14 | Alton F. Jr. Grant | 17 | Son | — | Massachusetts |
| 15 | Donald Grant | 13 | Son | — | Massachusetts |
| 16 | Wesley Grant | 7 | Son | — | Massachusetts |
| 17 | F. Bryant | 78 | Father | — | Maine |
| 18 | Russell Walker | 23 | Lodger | Salesman | Massachusetts |
| 19 | Robert Bilodeau | 52 | Head | Ounibus Driver | Massachusetts |
| 20 | Mary Bilodeau | 50 | Wife | — | Massachusetts |
| 21 | Robert Bilodeau | 26 | Son | Retail Clerk | Massachusetts |
| 22 | Joseph Bilodeau | 24 | Son | Trackman | Massachusetts |
| 23 | John Bilodeau | 21 | Son | New Worker | Massachusetts |
| 24 | Arthur J. Lutz | 33 | Head | Watchman | Massachusetts |
| 25 | Mildred A. Lutz | 31 | Wife | — | New Hampshire |
| 26 | Sally Lutz | 7 | Daughter | — | Massachusetts |
| 27 | Alice Sanford | 51 | Mother-in-law | Housework | Vermont |
| 28 | James Lutz | 65 | Head | Master Mechanic | New Brunswick |
| 29 | Sarah Lutz | 67 | Wife | — | Nova Scotia |
| 30 | Thomas F. Brennan THIS PERSON | 64 | Head | Proprietor | Massachusetts |
| 31 | Catherine A. Brennan | 58 | Wife | — | Massachusetts |
| 32 | Dorothy Brennan | 25 | Daughter | Service Operator | Massachusetts |
| 33 | James H. Flynn | 46 | Head | Janitor | Massachusetts |
| 34 | Elizabeth M. Flynn | 50 | Wife | — | Massachusetts |
| 35 | Muriel Flynn | 14 | Daughter | — | Massachusetts |
| 36 | Helen Wielinski | 45 | Head | Greaser | Poland |
| 37 | Alexander Wielinski | 21 | Son | Stockman | Massachusetts |
| 38 | Jessie Wielinski | 19 | Daughter | Card Dropper | Massachusetts |
| 39 | Eli N. Feeley | 38 | Head | Gas Meter | Massachusetts |
| 40 | Mildred A. Feeley | 36 | Wife | — | Massachusetts |
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)