MS
Mary Sims — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Alabama
Our Model Tree links this Mary Sims across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Alabama (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 3-person household.
Age 56
b. ~1884
Female
Head
Born: Alabama
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Alabama |
| Surname | Sims |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham city |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Birmingham City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Odelle Sims | Daughter | — | 25 | ~1915 |
| Mary Sims | Head | — | 56 | ~1884 |
| J Sims | Son | — | 28 | ~1912 |
Census Appearances
1920
Jefferson, Alabama
Spouse, age 40
Jefferson, Alabama · implied b. ~1880 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sims |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Laborer |
| Industry | General |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Jefferson, Alabama
Other, age 48
Jefferson, Alabama · implied b. ~1882 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sims |
| Given Name | Mary |
| Relationship to Head | wife-H |
| Sex | F |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 13 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | nurse practical |
| Industry | private home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Head, age 56
Jefferson-County, Alabama · implied b. ~1884 — 3 household members
| Surname | Sims |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham city |
| 1935 Residence (County) | Jefferson |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Sims across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Sims
Head · 1940 · age 56 · b. ~1884 · Alabama
★ 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 — Jefferson-County, Alabama
Open full size
1940 US Federal Census — Jefferson-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00091-00245)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nora H. Martin | 49 | Head | Teacher | Alabama |
| 2 | Samuel Martin | 54 | Brother | Steel Worker | Alabama |
| 3 | Lila M. Smith | 26 | Niece | Teacher | Alabama |
| 4 | Harvey C. Williams | 36 | Head | Laborer | Alabama |
| 5 | Inez J. Williams | 27 | Wife | — | Alabama |
| 6 | Harvey C. Jr. Williams | 4 | Son | — | Alabama |
| 7 | Earl Williams | 2 | Son | — | Alabama |
| 8 | Coleman Eldridge | 34 | Head | House Wrecker | Alabama |
| 9 | Allene Eldridge | 27 | Wife | — | Alabama |
| 10 | Nora M. Eldridge | 2 | Daughter | — | Alabama |
| 11 | Coleman Jr. Eldridge | 1 | Son | — | Alabama |
| 12 | Lilly M. Richardson | 34 | Head | — | Alabama |
| 13 | Lee Anna Richardson | 13 | Daughter | — | Ohio |
| 14 | Gwendolyn Richardson | 1 | Daughter | — | Alabama |
| 15 | John H. Richardson | 1 | Son | — | Alabama |
| 16 | Roland R. Williams | 62 | Head | Clergyman | Alabama |
| 17 | Katie L. Williams | 58 | Wife | — | Alabama |
| 18 | Julia H. Williams | 23 | Daughter | Teacher | Alabama |
| 19 | Mabel G. Williams | 20 | Daughter | — | Alabama |
| 20 | Corine J. Williams | 18 | Daughter | — | Alabama |
| 21 | Wilbur J. Williams | 16 | Son | — | Alabama |
| 22 | Carrie L. Prewell | 59 | Head | Seamstress | Alabama |
| 23 | Edna L. Prewell | 33 | Daughter | Teacher | Alabama |
| 24 | Mary Scott | 78 | Mother | — | Alabama |
| 25 | Ida M. Black | 38 | Lodger | Maid | Alabama |
| 26 | Alma L. Bass | 25 | Lodger | Maid | Alabama |
| 27 | Arthur D. Westley | 49 | Head | Laborer | Georgia |
| 28 | Belle Westley | 46 | Wife | — | Alabama |
| 29 | Martha P. Gray | 30 | Step-daughter | — | Alabama |
| 30 | Jesse Jones | 37 | Lodger | Janitor | Alabama |
| 31 | Mary Sims THIS PERSON | 56 | Head | — | Alabama |
| 32 | J. B. Sims | 28 | Son | — | Alabama |
| 33 | Odelle Sims | 25 | Daughter | Teacher | Alabama |
| 34 | Susie Snowden | 63 | Head | — | Alabama |
| 35 | John Ennis | 45 | Head | Carpenter | Alabama |
| 36 | Cassieaner Ennis | 34 | Wife | — | Alabama |
| 37 | Miree Coleman | 22 | Head | Waitress | Alabama |
| 38 | Autherie Coleman | 20 | Wife | Servant | Alabama |
| 39 | Cecil L. Christian | 37 | Head | Teacher | Alabama |
| 40 | Richard Christian | 35 | Wife | Teacher | Alabama |
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)