MW
Mary Wallace — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sumter-County, Alabama
Our Model Tree links this Mary Wallace across the 1920, 1930 and 1940 US Censuses in Sumter-County, Alabama (XGBoost, ~Confirmed), with identified parents John & Annie — first a spouse (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Female
Spouse
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, Alabama |
| Surname | Wallace |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Bellamy |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 40 |
| Highest Grade | No 8 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Farmer |
| Township / Ward | Election Precinct 4 Parker |
| Est. Birth Year | ~1920 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Shirley Wallace | Daughter | — | 3 | ~1937 |
| Preston Wallace | Head | — | 25 | ~1915 |
| Martha Johnson | Other | — | 22 | ~1918 |
| Preston Wallace | Son | — | 2 | ~1938 |
| Mary Wallace | Spouse | — | 20 | ~1920 |
Census Appearances
1920
Sumter, Alabama
Daughter, age
Sumter, Alabama · implied b. ~1920 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Sumter, Alabama
Daughter, age 12
Sumter, Alabama · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | No |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Sumter-County, Alabama
Spouse, age 20
Sumter-County, Alabama · implied b. ~1920 — 5 household members
| Surname | Wallace |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Bellamy |
| 1935 Residence (County) | Sumter |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 40 |
| Highest Grade | No 8 |
| 1935 Residence | Alabama |
| 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 Wallace across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Wallace (~0.92 confidence) and mother Annie Wallace (~0.92 confidence) and father James Wallace (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Wallace
b. ~1853
Source father
● Household
· direct · ~0.92
Mother
Annie Wallace
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
James Wallace
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Wallace
Spouse · 1940 · age 20 · b. ~1920 · 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 — Sumter-County, Alabama
Open full size
1940 US Federal Census — Sumter-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00080-00100)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ben Simmons | 18 | Step son | Laborer | Alabama |
| 2 | Preston Wallace | 25 | Head | Laborer | Alabama |
| 3 | Mary Wallace THIS PERSON | 20 | Wife | Farmer | Alabama |
| 4 | Shirley Wallace | 3 | Daughter | — | Alabama |
| 5 | Preston Jr Wallace | 2 | Son | — | Alabama |
| 6 | Martha Johnson | 22 | Sister in law | Cook | Alabama |
| 7 | John Ward | 39 | Head | Farmer | Alabama |
| 8 | Liza Ward | 32 | Wife | — | Alabama |
| 9 | Beatrice Ward | 6 | Daughter | — | Alabama |
| 10 | Daisy Folsom | 28 | Sister in law | Laborer | Alabama |
| 11 | Dack Ward | 66 | Head | Farmer | Alabama |
| 12 | Allie Ward | 61 | Wife | — | Alabama |
| 13 | Laura Ward | 38 | Daughter | Laborer | Alabama |
| 14 | Dack Jr Ward | 18 | Grandson | Laborer | Alabama |
| 15 | John Jr Ward | 15 | Grandson | — | Alabama |
| 16 | John H Noble | 68 | Brother in law | Laborer | Alabama |
| 17 | John Edwards | 56 | Head | Laborer | Alabama |
| 18 | Lelar Edwards | 49 | Wife | — | Alabama |
| 19 | Sarah Edwards | 27 | Daughter | — | Alabama |
| 20 | Lonnie Mitchell | 21 | Son in law | Laborer | Alabama |
| 21 | Iela Mae Spraggin | 7 | Grand daughter | — | Alabama |
| 22 | Clarene Gill | 6 | Grand daughter | — | Alabama |
| 23 | Johnnie F Mcnair | 1 | Grandson | — | Alabama |
| 24 | Ella Bee Spraggin | 0 | Grand daughter | — | Alabama |
| 25 | Ned Whitehead | 51 | Head | Laborer | Alabama |
| 26 | Sarah Whitehead | 49 | Wife | Farmer | Alabama |
| 27 | Mitchell Whitehead | 24 | Son | Laborer | Alabama |
| 28 | Fayretta Whitehead | 22 | Daughter in law | Laborer | Alabama |
| 29 | Clara Whitehead | 29 | Daughter | — | Alabama |
| 30 | Minnie Lee Tidmore | 7 | Grand daughter | — | Alabama |
| 31 | Joseph Tidmore | 5 | Grandson | — | Alabama |
| 32 | Mitchell Jr Whitehead | 2 | Grandson | — | Alabama |
| 33 | Jim Johnson | 54 | Head | Laborer | Alabama |
| 34 | Frances Johnson | 50 | Wife | — | Alabama |
| 35 | Ella Mary Johnson | 18 | Daughter | Cook | Alabama |
| 36 | Lee Johnson | 14 | Son | — | Alabama |
| 37 | Annie Bell Johnson | 12 | Daughter | — | Alabama |
| 38 | Mildred Jane Miller | 0 | Grand daughter | — | Alabama |
| 39 | Jim Smith | 67 | Head | Farmer | Alabama |
| 40 | Ella Smith | 55 | Wife | — | Alabama |
Related Census Records
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)