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Robert Williamson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, Alabama
Our Model Tree links this Robert Williamson across the 1930 and 1940 US Censuses in Sumter-County, Alabama (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 10-person household.
Age 22
b. ~1918
Male
Son
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, Alabama |
| Surname | Williamson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 64 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Farmer |
| Township / Ward | Precinct 7 Livingston |
| Est. Birth Year | ~1918 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Lewis Williamson | Son | — | 19 | ~1921 |
| Robert Williamson | Son | — | 22 | ~1918 |
| Nathaniel Williamson | Son | — | 24 | ~1916 |
| James Williamson | Son | — | 10 | ~1930 |
| Nathaniel Williamson | Head | — | 55 | ~1885 |
| James Williamson | Son | — | 17 | ~1923 |
| Pallee Crim | Other | — | 65 | ~1875 |
| Mary Williamson | Spouse | — | 44 | ~1896 |
| Lula Williamson | Other | — | 20 | ~1920 |
| Catherine Williamson | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Sumter, Alabama
Son, age 12
Sumter, Alabama · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Sumter-County, Alabama
Son, age 22
Sumter-County, Alabama · implied b. ~1918 — 10 household members
| Surname | Williamson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sumter |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 64 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 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 Robert Williamson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Williamson
Son · 1940 · age 22 · b. ~1918 · Alabama
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Sibling
Catherine Williamson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lewis Williamson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Williamson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nathaniel Williamson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Williamson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-00080-00295)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rosa Fellows | 28 | Wife | Laborer | Alabama |
| 2 | Charlie Fellows | 10 | Son | — | Alabama |
| 3 | Isaac Fellows | 8 | Son | — | Alabama |
| 4 | Albert L. Fellows | 6 | Son | — | Alabama |
| 5 | Jessie Fellows | 5 | Son | — | Alabama |
| 6 | Alec Fellows | 4 | Son | — | Alabama |
| 7 | James W. Fellows | 2 | Son | — | Alabama |
| 8 | Nathaniel Williamson | 55 | Head | Farmer | Alabama |
| 9 | Mary E. Williamson | 44 | Wife | — | Alabama |
| 10 | Nathaniel Williamson | 24 | Son | Laborer | Alabama |
| 11 | Lewis Williamson | 19 | Son | — | Alabama |
| 12 | James Williamson | 17 | Son | — | Alabama |
| 13 | Catherine Williamson | 14 | Daughter | — | Alabama |
| 14 | James Williamson | 10 | Son | — | Alabama |
| 15 | Robert L. Williamson THIS PERSON | 22 | Son | Farmer | Alabama |
| 16 | Lula M. Williamson | 20 | Daughter-in-law | — | Alabama |
| 17 | Pallee Crim | 65 | Lodger | — | Alabama |
| 18 | Jones Porter | 28 | Head | — | Alabama |
| 19 | Willie Lewis | 48 | Head | Carpenter | Alabama |
| 20 | Mary Lewis | 43 | Wife | Laborer | Alabama |
| 21 | Annie N. Lewis | 18 | Daughter | Laborer | Alabama |
| 22 | Mattie L. Lewis | 11 | Daughter | — | Alabama |
| 23 | Willie Matthews | 12 | Grandson | 0 | Alabama |
| 24 | Susie Walker | 45 | Head | Farmer | Alabama |
| 25 | Amanda Walker | 17 | Daughter | — | Alabama |
| 26 | Edward Walker | 15 | Son | — | Alabama |
| 27 | Missie Sledge | 56 | Head | — | Alabama |
| 28 | James W. Hunter | 46 | Head | Farmer | Alabama |
| 29 | Lily N. Hunter | 34 | Wife | — | Mississippi |
| 30 | Frank Clark | 18 | Head | Laborer | Alabama |
| 31 | Mack May | 67 | Head | Farmer | Alabama |
| 32 | Maggie C. May | 67 | Wife | — | Alabama |
| 33 | Emanuel Edwards | 51 | Step-son | Laborer | Alabama |
| 34 | Susie Chapman | 58 | Head | Farmer | Alabama |
| 35 | Robert Chapman | 24 | Son | Laborer | Alabama |
| 36 | Mattie Chapman | 20 | Daughter-in-law | — | Alabama |
| 37 | Robert L. Chapman | 2 | Grandson | 0 | Alabama |
| 38 | Jeff Chapman | 0 | Grandson | 0 | Alabama |
| 39 | Reuben Clark | 30 | Son-in-law | Farmer | Alabama |
| 40 | Rosie B. Clark | 28 | Daughter | — | 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)