MB
Mary Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Brennan across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 9-person household.
Age 60
b. ~1880
Female
Spouse
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Brennan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Naturalization Status | Naturalized |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Phila |
| Est. Birth Year | ~1880 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Brennan | Daughter | — | 33 | ~1907 |
| Marion Brennan | Daughter | — | 25 | ~1915 |
| Agnes Brennan | Daughter | — | 23 | ~1917 |
| Martin Brennan | Head | — | 65 | ~1875 |
| Thomas Brennan | Son | — | 28 | ~1912 |
| Joseph Brennan | Son | — | 20 | ~1920 |
| Robert Brennan | Son | — | 18 | ~1922 |
| William Brennan | Son | — | 33 | ~1907 |
| Mary Brennan | Spouse | — | 60 | ~1880 |
Census Appearances
1930
Philadelphia, Pennsylvania
Spouse, age 50
Philadelphia, Pennsylvania · implied b. ~1880 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1896 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Housekeeper |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Philadelphia-County, Pennsylvania
Spouse, age 60
Philadelphia-County, Pennsylvania · implied b. ~1880 — 9 household members
| Surname | Brennan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Naturalization Status | Naturalized |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Mary Brennan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brennan
Spouse · 1940 · age 60 · b. ~1880 · Pennsylvania
★ 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 — 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-t0627-03715-00276)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sister Haley-Margaret | None | F | Printing Co | — |
| 42 | Charles Wood | 53 | Head | Sign Painter | Penna |
| 43 | May Wood | 46 | Wife | — | Penna |
| 44 | Richard Wood | 24 | Son | Sign Painter | Penna |
| 45 | Martin Brennan | 65 | Head | — | Penna |
| 46 | Mary Brennan THIS PERSON | 60 | Wife | — | Sweden |
| 47 | Helen Brennan | 33 | Daughter | Telephone Operator | Penna |
| 48 | William Brennan | 33 | Son | Machinist | Penna |
| 49 | Thomas Brennan | 28 | Son | Bell-Hop | Penna |
| 50 | Marion Brennan | 25 | Daughter | Clerk | Penna |
| 51 | Agnes Brennan | 23 | Daughter | Stenotypist | Penna |
| 52 | Joseph Brennan | 20 | Son | Clerk | Penna |
| 53 | Robert Brennan | 18 | Son | — | Penna |
| 54 | John Synder | 58 | Head | Driver | Penna |
| 55 | Linda Synder | 52 | Wife | — | Penna |
| 56 | Raymond Synder | 30 | Son | Adjuster | Penna |
| 57 | Dorothy Synder | 30 | Daughter | Bookkeeper | Penna |
| 58 | Edgar Weightman | 69 | Head | — | Penna |
| 59 | Blanche Weightman | 66 | Sister | — | Penna |
| 60 | Elmer Hafer | 34 | Head | Chauffeur | Delaware |
| 61 | Mae Hafer | 33 | Wife | — | Penna |
| 62 | Elmer Hafer | 8 | Son | — | Penna |
| 63 | William Hafer | 5 | Son | — | Penna |
| 64 | Robert Hafer | 2 | Son | — | Penna |
| 65 | Max Fetcher | 79 | Head | — | Germany |
| 66 | Amelia Fetcher | 77 | Wife | — | Germany |
| 67 | Otto Fetcher | 53 | Son | Sculptor | Penna |
| 68 | Emma Urban | 54 | Head | — | Germany |
| 69 | Ervin Urban | 26 | Son | Toolmaker | Germany |
| 70 | Phillip Trub | 31 | Head | Electrician | Penna |
| 71 | Mae Trub | 30 | Wife | — | Penna |
| 72 | Charles Trub | 11 | Son | — | Penna |
| 73 | Lillian Trub | 8 | Daughter | — | Penna |
| 74 | Richard Trub | 2 | Son | — | Penna |
| 75 | Anna Triebwasser | 59 | Head | — | Poland |
| 76 | Emil Triebwasser | 62 | Brother | Gear Cutter | Poland |
| 77 | William Triebwasser | 64 | Brother | — | Poland |
| 78 | William Cornell | 64 | Head | Electrician | New-York |
| 79 | Elizabeth Cornell | 64 | Wife | — | Penna |
| 80 | Helen Cornell | 32 | Daughter | Clerk | Penna |
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)