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Margaret Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Margaret Thomas across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1873), then head of a 3-person household.
Age 67
b. ~1873
Female
Spouse
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Thomas |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Los Angeles city |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1873 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| William Thomas | Head | — | 68 | ~1872 |
| Stanley Thomas | Son | — | 31 | ~1909 |
| Margaret Thomas | Spouse | — | 67 | ~1873 |
Census Appearances
1920
Los Angeles, …
Spouse, age 44
Los Angeles, California · implied b. ~1876 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Los Angeles, …
Spouse, age 57
Los Angeles, California · implied b. ~1873 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Margaret M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 24 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Los-Angeles-County, California
Spouse, age 67
Los-Angeles-County, California · implied b. ~1873 — 3 household members
| Surname | Thomas |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Los Angeles city |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Margaret Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Thomas
Spouse · 1940 · age 67 · b. ~1873 · California
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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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00424-00320)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gust Nelson | 72 | Head | Machinist | Sweden |
| 2 | Marie Nelson | 69 | Wife | — | Switzerland |
| 3 | William Thomas | 68 | Head | — | Wales |
| 4 | Margaret Thomas THIS PERSON | 67 | Wife | — | Missouri |
| 5 | Stanley Thomas | 31 | Son | Porter | Missouri |
| 6 | Nils Sivenson | 59 | Head | Mechanic | Sweden |
| 7 | Vela Sivenson | 57 | Wife | — | Norway |
| 8 | Lucille Sivenson | 23 | Daughter | Beautician | California |
| 9 | John Ellis | 31 | Head | Accountant | New Jersey |
| 10 | Lois Ellis | 21 | Wife | — | Oklahoma |
| 11 | Jackie Ellis | 2 | Son | — | California |
| 12 | Carol Ellis | 1 | Daughter | — | California |
| 13 | David J. James | 49 | Head | Investigator | Wales |
| 14 | Bertine James | 45 | Wife | Registered Nurse | North Dakota |
| 15 | Charles Pearson | 30 | Head | Dist. Manager | Mexico |
| 16 | Hazel Pearson | 27 | Wife | — | Iowa |
| 17 | Richard Pearson | 4 | Son | — | California |
| 18 | Charles Russell | 36 | Head | Checker | Colorado |
| 19 | Velma Russell | 36 | Wife | — | Texas |
| 20 | Donald Russell | 2 | Son | — | California |
| 21 | Martin Stoddard | 52 | Head | Elevator Pilot | Idaho |
| 22 | Mable Stoddard | 43 | Wife | Janitress | Michigan |
| 23 | Mattie Stoddard | 76 | Mother | — | Colorado |
| 24 | Ora Nell Stoddard | 55 | Sister | — | Colorado |
| 25 | Helen Stoddard | 33 | Sister | — | Idaho |
| 26 | Harold Brownlow | 28 | Head | Bottler | Iowa |
| 27 | Mary Brownlow | 27 | Wife | — | Iowa |
| 28 | Roger Brownlow | 9 | Son | — | Iowa |
| 29 | Neil Brownlow | 7 | Son | — | Iowa |
| 30 | Ann Brownlow | 3 | Daughter | — | California |
| 31 | Teichgraber Conrad | 65 | Head | — | Missouri |
| 32 | Julia Conrad | 55 | Wife | — | Hungary |
| 33 | Ralph Kingsley | 37 | Head | Iron Worker | Kansas |
| 34 | Mary Kingsley | 32 | Wife | Nurse | Michigan |
| 35 | Mary Lou Kingsley | 7 | Daughter | — | California |
| 36 | Richard Schwind | 30 | Head | Glass Maker | Ohio |
| 37 | Ruth Schwind | 27 | Wife | — | Ohio |
| 38 | Paul Schwind | 8 | Son | — | Ohio |
| 39 | Gerald Schwind | 6 | Son | — | Ohio |
| 40 | Charles Schwind | 4 | Son | — | Ohio |
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)