IT
Isaac Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lee-County, Alabama
Our Model Tree links this Isaac Thomas across the 1910, 1920, 1930 and 1940 US Censuses in Lee-County, Alabama (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 5-person household.
Age 49
b. ~1891
Male
Head
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lee-County, Alabama |
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Opelika City |
| 1935 Residence (County) | Lee |
| Additional Details | |
| Occupation | Laborer |
| Industry | City |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 98 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Laborer |
| Township / Ward | Opelika City |
| Est. Birth Year | ~1891 |
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 Isaac | Age | Birth yr |
|---|---|---|---|---|
| R Thomas | Son | — | 19 | ~1921 |
| Viola Thomas | Spouse | — | 45 | ~1895 |
| Lillie Morgan | Daughter | — | 25 | ~1915 |
| Vilena Morgan | Other | — | 9 | ~1931 |
| Isaac Thomas | Head | — | 49 | ~1891 |
Census Appearances
1910
Lee, Alabama
Head, age 23
Lee, Alabama · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaiah |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Alabama |
| Years Married | 1 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Farmer |
| Industry | General Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1920
Lee, Alabama
Head, age 30
Lee, Alabama · implied b. ~1890 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Emp |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Lee, Alabama
Head, age 39
Lee, Alabama · implied b. ~1891 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 18 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Can Read/Write | No |
| Home Owned/Rented | O |
| Home Value / Rent | 500 |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Lee-County, Alabama
Head, age 49
Lee-County, Alabama · implied b. ~1891 — 5 household members
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Opelika City |
| 1935 Residence (County) | Lee |
| Occupation | Laborer |
| Industry | City |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 98 |
| Highest Grade | No 6 |
| 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 Isaac Thomas across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Isaac Thomas
Head · 1940 · age 49 · b. ~1891 · Alabama
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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 — Lee-County, Alabama
Open full size
1940 US Federal Census — Lee-County, Alabama
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00052-00084)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lindsay Lewis | 47 | Head | Laborer | Alabama |
| 2 | Emma Lewis | 42 | Wife | — | Alabama |
| 3 | James Fielder | 19 | Son-in-law | Laborer | Alabama |
| 4 | Quievirtis | Quievirtie Fielder | 17 | Daughter | — | Alabama |
| 5 | Bertha Lee Fielder | 12 | Granddaughter | — | Alabama |
| 6 | Isaac Thomas THIS PERSON | 49 | Head | Laborer | Alabama |
| 7 | Viola Thomas | 45 | Wife | — | Alabama |
| 8 | Lillie P. Morgan | 25 | Daughter | Cook | Alabama |
| 9 | Vilena Morgan | 9 | Granddaughter | — | Alabama |
| 10 | R. J. Thomas | 19 | Son | Porter | Alabama |
| 11 | Eastman Todd | 38 | Head | — | Virginia |
| 12 | Emma Todd | 66 | Wife | Laundress | Alabama |
| 13 | Manuel Thomas | 27 | Head | Laborer | Alabama |
| 14 | Emma Lee Thomas | 26 | Wife | Cook | Alabama |
| 15 | Hattie Clayton | 67 | Head | — | Alabama |
| 16 | Nelson Clayton | 52 | Son | Carpenter | Alabama |
| 17 | Rachael Clayton | 49 | Daughter-in-law | Laundress | Alabama |
| 18 | Mollie Palm | 70 | Head | Servant | Alabama |
| 19 | Gertrude Oliver | 30 | Lodger | Cook | Alabama |
| 20 | Johnnie F. Knight | 6 | Grandson | — | Alabama |
| 22 | Fannie Frederick | 75 | Head | — | Georgia |
| 23 | Mary Lipscomb | 52 | Daughter | Laundress | Alabama |
| 24 | Milus Strozier | 17 | Grandson | Porter | Alabama |
| 25 | Joseph Gibson | 10 | Grandson | — | Alabama |
| 26 | Agustus | Augustus Gibson | 12 | Grandson | — | Alabama |
| 27 | Fannie P. Gibson | 12 | Granddaughter | — | Alabama |
| 28 | Elizabeth Bell | 30 | Granddaughter | Servant | Alabama |
| 29 | Josephine Talbert | 33 | Granddaughter | Cook | Alabama |
| 30 | Annie M. Thomas | 42 | Head | Laundress | Alabama |
| 31 | Mary F. Thomas | 16 | Daughter | — | Alabama |
| 32 | Mazelle Robertson | 35 | Head | Cook | Alabama |
| 33 | Della Mae Reed | 20 | Daughter | Laundress | Alabama |
| 34 | J. D. Reed | 1 | Grandson | — | Alabama |
| 35 | Laurine Vincent | 25 | Sister | Servant | Alabama |
| 36 | Sophie Harris | 44 | Head | Laundress | Alabama |
| 37 | William H. Harris | 57 | Uncle | — | Alabama |
| 38 | Hattie Nettles | 65 | Head | — | Alabama |
| 39 | Jessie Nettles | 45 | Daughter | — | Alabama |
| 40 | Ed Frazier | 55 | Head | Plumber | 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)