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Mary Brady — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Diego-County, California
Our Model Tree links this Mary Brady across the 1920, 1930 and 1940 US Censuses in San-Diego-County, California (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 3-person household.
Age 61
b. ~1879
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Diego-County, California |
| Surname | Brady |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| Additional Details | |
| Hours Worked | 40 |
| Highest Grade | No 4 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | San Diego |
| Est. Birth Year | ~1879 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Bertha Brady | Daughter | — | 32 | ~1908 |
| Mary Brady | Head | — | 61 | ~1879 |
| Berton Brady | Son | — | 30 | ~1910 |
Census Appearances
1920
San Diego, …
Other, age 40
San Diego, California · implied b. ~1880 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brady |
| Given Name | Mary |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | United States |
| Mother's Birthplace | Illinois |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
San Diego, …
Other, age 50
San Diego, California · implied b. ~1880
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Brady |
| Given Name | Mary E. |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Illinois |
| Occupation | Bookkeeper |
| Industry | City Park Board |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | $35 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
San-Diego-County, California
Head, age 61
San-Diego-County, California · implied b. ~1879 — 3 household members
| Surname | Brady |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| Hours Worked | 40 |
| Highest Grade | No 4 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Brady across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brady
Head · 1940 · age 61 · b. ~1879 · California
★ 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 — San-Diego-County, California
Open full size
1940 US Federal Census — San-Diego-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00450-00308)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donna Prince | 46 | Wife | — | Kansas |
| 2 | Mary Brady THIS PERSON | 61 | Head | — | Illinois |
| 3 | Bertha Brady | 32 | Daughter | — | Indiana |
| 4 | Berton Brady | 30 | Son | Musician | Indiana |
| 5 | Jean Le Rosen | 20 | Head | — | California |
| 6 | Extra Line Le Rosen | None | — | — | — |
| 7 | Butte Hamilton | 28 | Head | Automobile Mechanic | Tennessee |
| 8 | Earlene Hamilton | 22 | Wife | — | Colorado |
| 9 | Nola Mae Hamilton | 3 | Daughter | — | Colorado |
| 10 | Nancy Lee Hamilton | 0 | Daughter | — | California |
| 11 | Albert G. Hayes | 66 | Head | — | Minnesota |
| 12 | Mae S. Hayes | 59 | Wife | — | Missouri |
| 13 | John Perry | 25 | Head | Aviation Metalsmith | Georgia |
| 14 | Maude Perry | 25 | Wife | — | Idaho |
| 15 | Fred A. Brockman | 50 | Head | Publisher | Oregon |
| 16 | Helen Brockman | 35 | Wife | Saleswoman | Minnesota |
| 17 | Foster Snow | 33 | Head | Machinist'S Mate | New York |
| 18 | Phyllis Snow | 31 | Wife | — | Maine |
| 19 | Leroy Mcdonnell | 28 | Head | Machinist'S Mate | Arkansas |
| 20 | Selma Mcdonnell | 27 | Wife | — | Tennessee |
| 21 | Lewis Combs | 28 | Head | Night Manager | Iowa |
| 22 | Joan Combs | 25 | Wife | — | Iowa |
| 23 | James L. Combs | 2 | Son | — | California |
| 24 | Janice M. Combs | 0 | Daughter | — | California |
| 25 | Henry Ulmen | 55 | Head | Proprietor | Minnesota |
| 26 | Elizabeth Ulmen | 52 | Wife | — | South Dakota |
| 27 | Marie Ulmen | 26 | Daughter | Waitress | Minnesota |
| 28 | Gerald Ulmen | 11 | Son | — | California |
| 29 | Too Many Spaces Reserved For Family Above | None | — | — | — |
| 30 | Too Many Spaces Reserved For Family Above | None | — | — | — |
| 31 | Harry L. Medearis | 71 | Head | — | Iowa |
| 32 | Elizabeth C. Medearis | 62 | Wife | — | Iowa |
| 33 | William Tilley | 23 | Step-son | — | California |
| 34 | Maud Fisher | 66 | Head | — | Michigan |
| 35 | Clara C. Rappin | 65 | Head | — | Wisconsin |
| 36 | Laura C. Beale | 85 | Head | — | Maine |
| 37 | Charles Street | 39 | Head | Bell Man | District of Columbia |
| 38 | Ruth Street | 36 | Wife | Saleswoman | Pennsylvania |
| 39 | Thomas J. Dickson | 27 | Head | Signalman | Texas |
| 40 | Audrey Dickson | 20 | Wife | — | Washington |
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)