MC
Margaret Carroll — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Margaret Carroll across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1884), then head of a 4-person household.
Age 56
b. ~1884
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Carroll |
| Given Name | Margaret C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Los Angeles |
| Est. Birth Year | ~1884 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Bernice Carroll | Daughter | — | 24 | ~1916 |
| Edward Carroll | Head | — | 57 | ~1883 |
| Paul Carroll | Son | — | 19 | ~1921 |
| Margaret Carroll | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Los Angeles, …
Spouse, age 36
Los Angeles, California · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Los Angeles, …
Spouse, age 46
Los Angeles, California · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Margaret A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Los-Angeles-County, California
Spouse, age 56
Los-Angeles-County, California · implied b. ~1884 — 4 household members
| Surname | Carroll |
| Given Name | Margaret C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Carroll 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 Carroll
Spouse · 1940 · age 56 · b. ~1884 · 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-t0627-00416-00201)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H. Ashley | 18 | Son | — | California |
| 2 | Wilford A. Rubel | 54 | Head | Public Accountant | Oregon |
| 3 | Amy C. Rubel | 54 | Wife | — | Iowa |
| 4 | George J. Johnson | 49 | Head | Jeweler | Illinois |
| 5 | Bertha B. Johnson | 48 | Wife | — | Nebraska |
| 6 | Mary R. Johnson | 20 | Daughter | — | California |
| 7 | Virginia B. Johnson | 17 | Daughter | — | California |
| 8 | Myron H. Tomb | 39 | Head | Accountant | Pennsylvania |
| 9 | Gertrude W. Tomb | 33 | Wife | Secretary | Kansas |
| 10 | Charles R. Galater | 57 | Head | Machinist | Louisiana |
| 11 | Marie Galater | 53 | Wife | — | France |
| 12 | Clare C. Ryker | 48 | Head | Salesman | Montana |
| 13 | Lauretta V. Ryker | 44 | Wife | Assistant | South Dakota |
| 14 | Locke Livernash | 46 | Head | Teacher | Minnesota |
| 15 | Beatrice A. Livernash | 51 | Wife | — | Irish Free State |
| 16 | Mary Livernash | 15 | Daughter | — | California |
| 17 | Joseph Cleveland | 54 | Head | Proprietor | Iowa |
| 18 | Edith M. Cleveland | 44 | Wife | — | South Dakota |
| 19 | Frank E. Ryan | 48 | Head | Book Keeper | Wisconsin |
| 20 | Richard J. Ryan | 13 | Son | — | Wisconsin |
| 21 | Kathleen M. Ryan | 11 | Daughter | — | Wisconsin |
| 22 | Mary A. Adams | 69 | Head | — | Wisconsin |
| 23 | Mary F. Adams | 28 | Daughter | Clerk | California |
| 24 | Minnie R. Cook | 68 | Head | — | Pennsylvania |
| 25 | William J. Brennan | 73 | Head | — | Irish Free State |
| 26 | Alice M. Brennan | 70 | Wife | — | Missouri |
| 27 | William R. Brennan | 42 | Son | — | Nebraska |
| 28 | Edward J. Carroll | 57 | Head | Proprietor | Iowa |
| 29 | Margaret C. Carroll THIS PERSON | 56 | Wife | — | Iowa |
| 30 | Bernice Carroll | 24 | Daughter | Clerk | California |
| 31 | Paul E. Carroll | 19 | Son | — | California |
| 32 | John J. Mullin | 44 | Head | Enumerator | California |
| 33 | Clyde M. Mullin | 40 | Wife | — | Minnesota |
| 34 | Jack J. Mullin | 12 | Son | — | California |
| 35 | James F. Mullin | 10 | Son | — | California |
| 36 | Ruth B. Mackloskey | 43 | Head | — | South Dakota |
| 37 | Milan C. Mackloskey | 17 | Son | — | California |
| 38 | Margot Mackloskey | 11 | Son | — | California |
| 39 | Frank Neubauer | 33 | Head | Photogrammetrist | Ohio |
| 40 | Elizabeth Neubauer | 32 | Wife | — | Texas |
Related Census Records
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)