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Thelma Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mobile-County, Alabama
Our Model Tree links this Thelma Thomas across the 1920, 1930 and 1940 US Censuses in Mobile-County, Alabama (XGBoost, ~Confirmed), with identified parents Henry & Bessie — first a daughter (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Female
Daughter
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mobile-County, Alabama |
| Surname | THOMAS |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Mobile City |
| 1935 Residence (County) | Mobile |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Mobile City |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Mrs Thomas | Head | — | 57 | ~1883 |
| Thelma Thomas | Daughter | — | 27 | ~1913 |
| Inez Thomas | Daughter | — | 33 | ~1907 |
Census Appearances
1920
Mobile, Alabama
Daughter, age 8
Mobile, Alabama · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Theldra |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Philadelphia |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Mobile, Alabama
Daughter, age 18
Mobile, Alabama · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Mobile-County, Alabama
Daughter, age 27
Mobile-County, Alabama · implied b. ~1913 — 3 household members
| Surname | THOMAS |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Mobile City |
| 1935 Residence (County) | Mobile |
| Highest Grade | H-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 Thelma Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Thomas (~0.92 confidence) and mother Bessie Thomas (~0.92 confidence) and mother Bessie Thomas (~0.92 confidence) and mother Mrs Thomas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Bessie Thomas
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Bessie Thomas
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Mrs Thomas
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Thomas
Daughter · 1940 · age 27 · b. ~1913 · Alabama
★ You are viewing this record
Sibling
Inez Thomas
Sibling · 1940 · age 33
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 — Mobile-County, Alabama
Open full size
1940 US Federal Census — Mobile-County, Alabama
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00064-00035)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Boydson | 53 | Head | Driver | California |
| 42 | Annie Boydson | 55 | Wife | Clerk | Alabama |
| 44 | Harold O. Wren | 36 | Head | Mechanic | Alabama |
| 45 | Vesta M. Wren | 30 | Wife | — | Mississippi |
| 46 | Mrs. Eugenia Wren | 63 | Head | — | Alabama |
| 47 | Ethmer King | 33 | Head | Concrete Foreman | Texas |
| 48 | Arista King | 36 | Wife | — | Louisiana |
| 49 | Samuel E. Crane | 29 | Head | Mechanic | Alabama |
| 50 | Nancy M. Crane | 32 | Wife | — | Alabama |
| 51 | Ed Konstanzer | 70 | Head | Machinist | Alabama |
| 52 | Mrs. Ed Konstanzer | 68 | Wife | — | Alabama |
| 53 | Joseph Muscat | 60 | Head | Salesman | Alabama |
| 54 | Dora H. Muscat | 60 | Wife | — | Alabama |
| 55 | Mary H. Muscat | 36 | Daughter | Car Service Secretary | Alabama |
| 56 | Vincent P. Muscat | 29 | Son | — | Alabama |
| 57 | Louis S. Henry | 57 | In-law | — | Alabama |
| 58 | Avice Crowley | 36 | Head | Attendant | Alabama |
| 59 | Eldora Crowley | 32 | Wife | — | Florida |
| 60 | Evelyn S. Crowley | 13 | Daughter | — | Alabama |
| 61 | Harry Crowley | 11 | Son | — | Florida |
| 62 | Vivian Crowley | 9 | Daughter | — | Alabama |
| 63 | May B. Davenport | 45 | Head | — | Alabama |
| 64 | Mae M. Davenport | 16 | Daughter | — | Alabama |
| 65 | Luciana G. Boulo | 78 | Mother | — | Louisiana |
| 66 | Annie Glass | 56 | Lodger | Stenographer | Mississippi |
| 67 | Charles Crawford | 31 | Nephew | — | Alabama |
| 68 | Henry Leroy East | 57 | Head | Construction Mill Wright | Mississippi |
| 69 | Annie B. East | 57 | Wife | — | Mississippi |
| 70 | Gladys Joiner | 23 | Lodger | Waitress | Alabama |
| 71 | Nannie Mercer | 57 | Head | Seamstress | Mississippi |
| 72 | Dora K. D. Bishop | 57 | Head | New Worker | Alabama |
| 73 | Alvin Levy | 52 | Head | Note Teller | Alabama |
| 74 | Inez W. Levy | 51 | Wife | — | Alabama |
| 75 | Ralph Watkins | 26 | Son-in-law | Salesman | Alabama |
| 76 | Ruth Watkins | 26 | Daughter | — | Alabama |
| 77 | Ruth D. Watkins | 2 | Daughter | — | Alabama |
| 78 | Mrs. B. M. Thomas | 57 | Head | — | Pennsylvania |
| 79 | Inez Thomas | 33 | Daughter | Stenographer | Alabama |
| 80 | Thelma Thomas THIS PERSON | 27 | Daughter | — | Alabama |
Pedigree Summary
Thelma + 1 sibling
Gen 1 · 4 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)