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Mary Baird — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Mary Baird across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Female
Daughter
Born: Nebraska
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Baird |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Secretary |
| Industry | Aircraft Mfg. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 250 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Secretary |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1915 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bruce Baird | Son | — | 29 | ~1911 |
| Manley Baird | Head | — | 60 | ~1880 |
| Mary Baird | Daughter | — | 25 | ~1915 |
| Winifred Baird | Spouse | — | 57 | ~1883 |
Census Appearances
1930
Los Angeles, …
Daughter, age 15
Los Angeles, California · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baird |
| Given Name | Mary E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Los-Angeles-County, California
Daughter, age 25
Los-Angeles-County, California · implied b. ~1915 — 4 household members
| Surname | Baird |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Secretary |
| Industry | Aircraft Mfg. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 250 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Baird across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Baird
Daughter · 1940 · age 25 · b. ~1915 · California
★ You are viewing this record
Sibling
Bruce Baird
Sibling · 1940 · age 29
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00408-00190)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Phillip Blackburn | 35 | Head | Dancing Teacher | Utah |
| 44 | Cecil A. Brisco | 41 | Head | Postman | Missouri |
| 45 | Juanita Brisco | 34 | Wife | — | Kansas |
| 46 | Claudia Brisco | 13 | Daughter | — | California |
| 47 | Laurin Brisco | 11 | Son | — | California |
| 48 | Laurel Brisco | 10 | Son | — | California |
| 49 | Phillis Brisco | 7 | Daughter | — | California |
| 50 | Bennis Brisco | 5 | Son | — | California |
| 51 | Sandra Lee Brisco | 4 | Daughter | — | California |
| 52 | Manley T. Baird | 60 | Head | Civil Engineer | Illinois |
| 53 | Winifred Baird | 57 | Wife | — | Illinois |
| 54 | Bruce Baird | 29 | Son | Civil Engineer | Illinois |
| 55 | Mary Baird THIS PERSON | 25 | Daughter | Secretary | Nebraska |
| 56 | F. Jr. Manley | 32 | Head | Painting Contractor | Illinois |
| 57 | Lena Manley | 27 | Wife | — | New Jersey |
| 58 | Manley (Iii) Manley | 6 | Son | — | New Jersey |
| 59 | Warick Manley | 4 | Son | — | New Jersey |
| 60 | Norman Manley | 1 | Son | — | California |
| 61 | Wm Charles Bishop | 47 | Head | Manager & Owner | Michigan |
| 62 | Grace K. Bishop | 47 | Wife | Bookkeeper | Michigan |
| 63 | Robert W. Tennent | 49 | Head | Adjuster | Scotland |
| 64 | Helen Singh | 40 | Head | Domestic | Jersey Mexico |
| 65 | Nahar Singh | 35 | Head | Gardener | India |
| 66 | Edward Kaminski | 44 | Head | Teacher | Wisconsin |
| 67 | Mary Kaminski | 67 | Mother | — | Wisconsin |
| 69 | Ross H. Whitley | 43 | Head | Broker | Minnesota |
| 70 | Irene Whitley | 41 | Wife | Teacher | Missouri |
| 71 | Johnstone Whitley | 15 | Son | Gardening | California |
| 72 | Margaret Whitley | 63 | Mother | — | Alabama |
| 73 | L. G. Wilson | 68 | Head | — | Pennsylvania |
| 74 | Ina Le Van Wilson | 25 | Son | Gardening | New York |
| 75 | A. J. Spencer | 46 | Head | Film Technician | Ohio |
| 76 | Ruth Spencer | 43 | Wife | — | Louisiana |
| 77 | Benj E. Pool | 57 | Head | Carpenter | California |
| 78 | Anne E. Pool | 55 | Wife | — | Oregon |
| 79 | Louise Palmatier | 27 | Daughter | — | California |
| 80 | Elana Palmatier | 5 | Granddaughter | — | California |
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)