ST
Sam Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Alabama
Our Model Tree links this Sam Thomas across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Alabama (XGBoost, ~Confirmed), with identified parents Al & Spencer — first a head (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Head
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Alabama |
| Surname | Thomas |
| Given Name | Sam |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Porter |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Porter |
| Township / Ward | Birmingham City |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Sam | Age | Birth yr |
|---|---|---|---|---|
| Sam Thomas | Son | — | 3 | ~1937 |
| Mattie Thomas | Other | — | 19 | ~1921 |
| Clara Thomas | Other | — | 32 | ~1908 |
| Sam Thomas | Head | — | 21 | ~1919 |
| Willie Bradberry | Other | — | 1 | ~1939 |
| Nettie Thomas | Spouse | — | 19 | ~1921 |
| Lillie Hall | Other | — | 2 | ~1938 |
Census Appearances
1920
Jefferson, Alabama
Son, age 2
Jefferson, Alabama · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Sam |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Industry | none |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Jefferson, Alabama
Son, age 12
Jefferson, Alabama · implied b. ~1918 — 28 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Sam |
| 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
Jefferson-County, Alabama
Head, age 21
Jefferson-County, Alabama · implied b. ~1919 — 7 household members
| Surname | Thomas |
| Given Name | Sam |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham City |
| 1935 Residence (County) | Jefferson |
| Occupation | Porter |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| 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 Sam Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Al Thomas (~0.60 confidence) and father Spencer Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence) and mother Rosa Thomas (~0.60 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.76
Father
Al Thomas
b. ~1909
Source father
● Household
· direct · ~0.6
Father
Spencer Thomas
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Rosa Thomas
b. ~1912
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Sam Thomas
Head · 1940 · age 21 · b. ~1919 · 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-t0627-00093-00567)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mamie Vance | 7 | Daughter | — | Alabama |
| 2 | Thomas Vance | 5 | Son | — | Alabama |
| 3 | Mary Vance | 65 | Mother | — | Georgia |
| 4 | Bailey Hicks | 56 | Head | — | England |
| 5 | Charles Hicks | 30 | Son | Mail Dept | Alabama |
| 6 | Velma Hicks | 29 | Daughter | — | Alabama |
| 7 | Clarence Thomas | 25 | Roomer | Insulating | Alabama |
| 8 | Blanche Thomas | 24 | Roomer | — | Alabama |
| 9 | Mary Thomas | 2 | Roomer | — | Alabama |
| 10 | Clarence Thomas | 0 | Roomer | — | Alabama |
| 11 | Martha Smith | 67 | Head | Maid | Alabama |
| 12 | Cornelia Patton | 67 | Sister | Laundress | Alabama |
| 13 | Robert Jackson | 50 | Head | Porter | Alabama |
| 14 | Gertrude Jackson | 45 | Wife | — | Alabama |
| 15 | Ollie Thomas | 40 | Head | Cook | Alabama |
| 16 | Sam Thomas THIS PERSON | 21 | Head | Porter | Alabama |
| 17 | Nettie Thomas | 19 | Wife | — | Alabama |
| 18 | Clara Thomas | 32 | S. in law | Laundress | Alabama |
| 19 | Mattie Thomas | 19 | Sister | Cook | Alabama |
| 20 | Sam Jr Thomas | 3 | Son | — | Florida |
| 21 | Lillie Hall | 2 | Niece | — | Alabama |
| 22 | Willie Bradberry | 1 | Niece | — | Alabama |
| 23 | Beatrice Thomas | 39 | Head | Laundress | Alabama |
| 24 | Hamp Williams | 43 | Roomer | Porter | Alabama |
| 25 | Carl Rose | 50 | Roomer | — | Alabama |
| 26 | Arthur Belcher | 32 | Head | Carpenter | Alabama |
| 27 | Beatrice Belcher | 30 | Wife | — | Mississippi |
| 28 | Joseph Belcher | 5 | Son | — | Alabama |
| 29 | Arthur Belcher | 69 | Father | Salesman | Alabama |
| 30 | Richard Wiseman | 28 | Head | Salesman | Alabama |
| 31 | Roy Mcclellan | 22 | Roomer | Salesman | Oklahoma |
| 32 | Nathan Mitchell | 24 | Head | Mechanic | Alabama |
| 33 | Amelia Mitchell | 21 | Wife | — | Alabama |
| 34 | Hollis Hence | 48 | Roomer | Laborer | Alabama |
| 35 | Jessie Hence | 43 | Roomer | — | Alabama |
| 36 | Elizabeth Hollis | 16 | Roomer | — | Alabama |
| 37 | Mattie Belle Jones | 47 | Head | Laundress | Alabama |
| 38 | Katie Jones | 21 | Daughter | Laundress | Alabama |
| 39 | Velma Jones | 19 | Daughter | Maid | Alabama |
| 40 | Effie Jones | 15 | Daughter | — | Alabama |
Pedigree Summary
Sam
Gen 1 · 4 parents
~0.76
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)