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Mary Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bolivar-County, Mississippi
Our Model Tree links this Mary Alexander across the 1930 and 1940 US Censuses in Bolivar-County, Mississippi (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 11-person household.
Age 42
b. ~1898
Female
Spouse
Born: Mississippi
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bolivar-County, Mississippi |
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 1 |
| 1935 Residence (County) | Bolivar |
| Additional Details | |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 30 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Occupation | Farm Laborer |
| Township / Ward | Beat 1 |
| Est. Birth Year | ~1898 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ada Alexander | Daughter | — | 5 | ~1935 |
| Luella Alexander | Daughter | — | 15 | ~1925 |
| Malvina Alexander | Daughter | — | 18 | ~1922 |
| Verbie Alexander | Daughter | — | 7 | ~1933 |
| Catherine Alexander | Daughter | — | 1 | ~1939 |
| May Alexander | Daughter | — | 3 | ~1937 |
| Andrew Alexander | Head | — | 65 | ~1875 |
| Andrew Alexander | Son | — | 20 | ~1920 |
| Johnny Alexander | Son | — | 13 | ~1927 |
| Samuel Alexander | Son | — | 9 | ~1931 |
| Mary Alexander | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Bolivar, Mississippi
Spouse, age 31
Bolivar, Mississippi · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Age at First Marriage | 16 |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read/Write | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Bolivar-County, Mississippi
Spouse, age 42
Bolivar-County, Mississippi · implied b. ~1898 — 11 household members
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 1 |
| 1935 Residence (County) | Bolivar |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 30 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 Alexander across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Alexander
Spouse · 1940 · age 42 · b. ~1898 · Mississippi
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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 — Bolivar-County, Mississippi
Open full size
1940 US Federal Census — Bolivar-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02009-00071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Will Mcmillon | 55 | Head | Farmer | Mississippi |
| 2 | Betty Mcmillon | 52 | Wife | Farm Laborer | Mississippi |
| 3 | Willie Mcmillon | 22 | Daughter | — | Mississippi |
| 4 | Ed Vance | 60 | Head | Farmer | Mississippi |
| 5 | Sarah Vance | 57 | Wife | Farm Laborer | Mississippi |
| 6 | Sylvester Vance | 25 | Son | Farm Laborer | Mississippi |
| 7 | Hosewit | Hosemit Vance | 19 | Son | Farm Laborer | Mississippi |
| 8 | Cornelia Vance | 17 | Daughter | Farm Laborer | Mississippi |
| 9 | Luella Vance | 16 | Daughter | Farm Laborer | Mississippi |
| 10 | Leroy Vance | 12 | Son | — | Mississippi |
| 11 | Alberta Vance | 10 | Daughter | Farm Laborer | Mississippi |
| 12 | Amacka Vance | 2 | Son | — | Mississippi |
| 13 | Andrew Alexander | 65 | Head | Farmer | Mississippi |
| 14 | Mary Alexander THIS PERSON | 42 | Wife | Farm Laborer | Mississippi |
| 15 | Andrew Jr Alexander | 20 | Son | Farm Laborer | Mississippi |
| 16 | Malvina Alexander | 18 | Daughter | Farm Laborer | Mississippi |
| 17 | Luella Alexander | 15 | Daughter | Farm Laborer | Mississippi |
| 18 | Johnny Alexander | 13 | Son | — | Mississippi |
| 19 | Samuel Alexander | 9 | Son | — | Mississippi |
| 20 | Verbie Alexander | 7 | Daughter | — | Mississippi |
| 21 | Ada T Alexander | 5 | Daughter | — | Mississippi |
| 22 | May Alexander | 3 | Daughter | — | Mississippi |
| 23 | Catherine Alexander | 1 | Daughter | — | Mississippi |
| 24 | Levi Washington | 59 | Head | Farmer | Mississippi |
| 25 | Martha Washington | 44 | Wife | Farm Laborer | Mississippi |
| 26 | L. C. Allen | 19 | Step-son | Farm Laborer | Mississippi |
| 27 | Emma Allen | 17 | Step-dau | Farm Laborer | Mississippi |
| 28 | Ida Allen | 15 | Step-dau | Farm Laborer | Mississippi |
| 29 | Jake Allen | 14 | Step-son | Farm Laborer | Mississippi |
| 30 | Mitchell Crawford | 35 | Head | Farmer | Arkansas |
| 31 | Eddie Lee Crawford | 16 | Wife | Farm Laborer | Mississippi |
| 32 | Jimmie Crawford | 1 | Son | — | Mississippi |
| 33 | John Rice | 40 | Head | Farmer | Mississippi |
| 34 | Birdie Rice | 35 | Wife | — | Mississippi |
| 35 | J. D. Whittington | 29 | Head | Manager | Mississippi |
| 36 | Norma Whittington | 31 | Wife | — | Mississippi |
| 37 | Rockie Whittington | 5 | Daughter | — | Mississippi |
| 38 | Betty Sue Whittington | 4 | Daughter | — | Mississippi |
| 39 | J. V. Warren | 26 | Head | Bookkeeper | Mississippi |
| 40 | Annie Louise Warren | 26 | Wife | — | Mississippi |
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)