RT
Rosa Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this Rosa Thomas across the 1920, 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed), with identified parents J & Jesse — first a daughter (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Female
Daughter
Born: Florida
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Thomas |
| Given Name | Rosa Lee |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Unincorporated place Marietta |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Occupation | Nurse |
| Industry | Doctor Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Nurse |
| Township / Ward | Unincorporated Place Marietta |
| Est. Birth Year | ~1920 |
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 Rosa | Age | Birth yr |
|---|---|---|---|---|
| Rosa Thomas | Daughter | — | 20 | ~1920 |
| Elva Thomas | Daughter | — | 29 | ~1911 |
| Anne Thomas | Spouse | — | 49 | ~1891 |
| Pauline Thomas | Daughter | — | 24 | ~1916 |
| Jesse Thomas | Head | — | 59 | ~1881 |
| Edward Thomas | Son | — | 27 | ~1913 |
| Vincent Hillman | Other | — | 29 | ~1911 |
Census Appearances
1920
Duval, Florida
Daughter, age 1
Duval, Florida · implied b. ~1919 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Rosa |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Duval, Florida
Daughter, age 10
Duval, Florida · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Rosalee |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Duval-County, Florida
Daughter, age 20
Duval-County, Florida · implied b. ~1920 — 7 household members
| Surname | Thomas |
| Given Name | Rosa Lee |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Unincorporated place Marietta |
| 1935 Residence (County) | Duval |
| Occupation | Nurse |
| Industry | Doctor Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 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 Rosa Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J Thomas (~0.92 confidence) and father Jesse Thomas (~0.92 confidence) and father Jesse Thomas (~0.92 confidence) and mother Lizzie Thomas (~0.92 confidence) and mother Annie Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Thomas
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Jesse Thomas
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Jesse Thomas
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Lizzie Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Annie Thomas
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Rosa Thomas
Daughter · 1940 · age 20 · b. ~1920 · Florida
★ You are viewing this record
Sibling
Pauline Thomas
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Thomas
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elva Thomas
Sibling · 1940 · age 29
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 — Duval-County, Florida
Open full size
1940 US Federal Census — Duval-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00584-00153)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Youngblood | 25 | Lodger | Laborer | Georgia |
| 2 | Walker J. Lloyd | 58 | Head | Foreman-Labor | Georgia |
| 3 | Janie Lloyd | 56 | Wife | — | Georgia |
| 4 | Otis Lloyd | 35 | Son | Gardener | Georgia |
| 5 | Gasper Lloyd | 23 | Son | Welder | Georgia |
| 6 | Nadine Lloyd | 14 | Daughter | — | North Carolina |
| 7 | Marshall E. Jones | 54 | Head | Operator | Florida |
| 8 | Effie R. Jones | 48 | Wife | — | Florida |
| 9 | Marshall H. Jones | 14 | Son | — | Florida |
| 10 | Robert L. Jones | 4 | Son | — | Florida |
| 11 | Napoleon Harvey | 37 | Head | Asst. Foreman | Florida |
| 12 | Dessie Harvey | 34 | Wife | Waitress | Florida |
| 13 | Erma Harvey | 15 | Daughter | — | Florida |
| 14 | Napoleon R. Harvey | 12 | Son | — | Florida |
| 15 | Ernest B. Jones | 45 | Head | Laborer | Florida |
| 16 | Lenora Jones | 41 | Wife | — | Florida |
| 17 | Lois Jones | 17 | Daughter | — | Florida |
| 18 | Lester J. Jones | 15 | Son | — | Florida |
| 19 | Henry Register | 57 | Head | Farm Hand | Florida |
| 20 | Geneva Register | 53 | Wife | — | Georgia |
| 21 | Edwin Register | 28 | Son | Laborer | Florida |
| 22 | Charles Register | 25 | Son | Milker | Florida |
| 23 | Lucille Register | 25 | Daughter-in-law | — | Florida |
| 24 | Rudolph Grosse | 32 | Head | Mechanic | Illinois |
| 25 | Edna Grosse | 22 | Wife | — | Florida |
| 26 | George Grosse | 10 | Son | — | Florida |
| 27 | Mildred Grosse | 7 | Daughter | — | Florida |
| 28 | Jesse Thomas | 59 | Head | Operator | Florida |
| 29 | Anne Thomas | 49 | Wife | — | Georgia |
| 30 | Pauline Thomas | 24 | Daughter | — | Florida |
| 31 | Rosa Lee Thomas THIS PERSON | 20 | Daughter | Nurse | Florida |
| 32 | Edward Thomas | 27 | Son | Laborer | Florida |
| 33 | Elva Mae Thomas | 29 | Daughter | — | Florida |
| 34 | Vincent Hillman | 29 | Lodger | Laborer | Massachusetts |
| 35 | Wade H. Dewitt | 63 | Head | Operator | South Carolina |
| 36 | Lillie Dewitt | 45 | Wife | — | Florida |
| 37 | Bronson Dewitt | 18 | Son | Carpenter Helper | Florida |
| 38 | William E. Dewitt | 16 | Son | — | Florida |
| 39 | Annie Lee Dewitt | 14 | Daughter | — | Florida |
| 40 | Arl Hofmann | 28 | Head | Milker | Arkansas |
Pedigree Summary
Rosa + 3 siblings
Gen 1 · 5 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)