RT
Ruth Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Columbia-County, Florida
Our Model Tree links this Ruth Thomas across the 1920, 1930 and 1940 US Censuses in Columbia-County, Florida (XGBoost, ~Confirmed), with identified parents Ida & William — first a daughter (b.~1900), then head of a 3-person household.
Age 40
b. ~1900
Female
Daughter
Born: Florida
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Columbia-County, Florida |
| Surname | Thomas |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | T + S |
| 1935 Residence (County) | Columbia |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Township / Ward | T S |
| Est. Birth Year | ~1900 |
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 Ruth | Age | Birth yr |
|---|---|---|---|---|
| Velma Thomas | Daughter | — | 16 | ~1924 |
| Ruth Thomas | Daughter | — | 40 | ~1900 |
| Nelly Thomas | Head | — | 54 | ~1886 |
Census Appearances
Daughter, age 22
Columbia, Florida · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Farm Laborer |
| Industry | Working out |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Columbia, Florida
Daughter, age 30
Columbia, Florida · implied b. ~1900 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Columbia-County, Florida
Daughter, age 40
Columbia-County, Florida · implied b. ~1900 — 3 household members
| Surname | Thomas |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | T + S |
| 1935 Residence (County) | Columbia |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 Ruth Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ida Thomas (~0.92 confidence) and father William Thomas (~0.92 confidence) and mother Lillie Thomas (~0.92 confidence) and mother Nelly Thomas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ida Thomas
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
William Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Lillie Thomas
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Nelly Thomas
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Thomas
Daughter · 1940 · age 40 · b. ~1900 · Florida
★ You are viewing this record
Sibling
Velma Thomas
Sibling · 1940 · age 16
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 — Columbia-County, Florida
Open full size
1940 US Federal Census — Columbia-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00579-00231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mikell Wortt | 4 | Son | — | Florida |
| 42 | Bessie Wortt | 3 | Daughter | — | Florida |
| 43 | Mary L. Wortt | 1 | Daughter | — | Florida |
| 44 | Elmer Tyre | 31 | Head | Farmer | Florida |
| 45 | Julia Tyre | 40 | Wife | — | Florida |
| 46 | Colton Tyre | 5 | Son | — | Florida |
| 47 | Loran Tyre | 5 | Son | — | Florida |
| 48 | Lucy Tyre | 3 | Daughter | — | Florida |
| 49 | Hilda Castine | 20 | Daughter | — | Florida |
| 50 | Edward Castine | 18 | Step-son | — | Florida |
| 51 | Ernie Castine | 16 | Step-son | — | Florida |
| 52 | Clarence Tyre | 29 | Head | Laborer | Florida |
| 53 | Virginia Tyre | 24 | Wife | — | Florida |
| 54 | Boyd Thomas | 53 | Head | Carpenter | Florida |
| 55 | Louise Thomas | 27 | Wife | — | Florida |
| 56 | Jimmie Tyre | 26 | Head | Foreman | Florida |
| 57 | Thelma Tyre | 21 | Wife | — | Florida |
| 58 | Monroe Tyre | 1 | Son | — | Florida |
| 59 | Nelly Thomas | 54 | Head | — | Florida |
| 60 | Ruth Thomas THIS PERSON | 40 | Daughter | — | Florida |
| 61 | Velma Thomas | 16 | Daughter | — | Florida |
| 62 | Ernest Douberley | 55 | Head | Farmer | Florida |
| 63 | Addie Douberley | 49 | Wife | — | Florida |
| 64 | Clarice Douberley | 20 | Daughter | Typist | Florida |
| 65 | Merlean Douberley | 18 | Daughter | — | Florida |
| 66 | R. Edwin Peacock | 24 | Head | Farmer | Florida |
| 67 | Audria Peacock | 23 | Wife | — | Florida |
| 68 | Sarah Tony | 46 | Head | — | Florida |
| 69 | Keyren Tony | 25 | Daughter | — | Florida |
| 70 | Sybil Tony | 13 | Daughter | — | Florida |
| 71 | Andrew Taylor | 46 | Head | Farmer | Florida |
| 72 | Carrie Taylor | 45 | Wife | — | Florida |
| 73 | W. P. Taylor | 18 | Son | — | Florida |
| 74 | J. T. Taylor | 15 | Son | — | Florida |
| 75 | Gladys Taylor | 18 | Daughter | — | Florida |
| 76 | Geniva Taylor | 15 | Daughter | — | Florida |
| 77 | Mary Taylor | 12 | Daughter | — | Florida |
| 78 | Clarence Taylor | 11 | Son | — | Florida |
| 79 | Joring Taylor | 9 | Son | — | Florida |
| 80 | Levy Taylor | 5 | Son | — | Florida |
Related Census Records
Pedigree Summary
Ruth + 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)