RT
Ruby Thomas — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Duval, Florida
Our Model Tree links this Ruby Thomas across the 1920 and 1930 US Censuses in Duval, Florida (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 8-person household.
Age 16
b. ~1914
Female
Daughter
Born: Georgia
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Duval, Florida |
| Surname | Thomas |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Additional Details | |
| Occupation | Baby Nurse |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Occupation | Baby Nurse |
| Township / Ward | Jacksonville |
| Est. Birth Year | ~1914 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Ruby | Age | Birth yr |
|---|---|---|---|---|
| James Thomas | Son | — | 3 | ~1927 |
| Mattie Armstrong | Spouse | — | 34 | ~1896 |
| Ernest Armstrong | Head | — | 46 | ~1884 |
| Elvessie Thomas | Daughter | — | 14 | ~1916 |
| George Thomas | Son | — | 12 | ~1918 |
| Charlie Thomas | Son | — | 6 | ~1924 |
| Ruby Thomas | Daughter | — | 16 | ~1914 |
| Florida Thomas | Daughter | — | 17 | ~1913 |
Census Appearances
1920
Atkinson, Georgia
Daughter, age 5
Atkinson, Georgia · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Speaks English | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1930
Duval, Florida
Daughter, age 16
Duval, Florida · implied b. ~1914 — 8 household members
| Surname | Thomas |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Occupation | Baby Nurse |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Ruby Thomas across 2 US Census years (1920 and 1930) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ruby Thomas
Daughter · 1930 · age 16 · b. ~1914 · Florida
★ You are viewing this record
Sibling
Florida Thomas
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Thomas
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlie Thomas
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Thomas
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elvessie Thomas
Sibling · 1930 · age 14
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
1930 US Federal Census — Duval, Florida
Open full size
1930 US Federal Census — Duval, Florida
Page Contents
27 people indexed on this census page (ia:1930:15thcensus312unit:0843)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Armstrong | 46 | Head | Laborer | South Carolina |
| 2 | Mattie Armstrong | 34 | Wife | Laundress | Georgia |
| 3 | Florida Thomas | 17 | Daughter | — | Georgia |
| 4 | Ruby Thomas THIS PERSON | 16 | Daughter | Baby Nurse | Georgia |
| 5 | Elvessie Thomas | 14 | Daughter | Baby Nurse | Georgia |
| 6 | George Thomas | 12 | Son | — | Georgia |
| 7 | Charlie Thomas | 6 | Son | — | Georgia |
| 8 | James Thomas | 3 | Son | — | Florida |
| 9 | Ella Felder | 42 | Head | Seamstress | Georgia |
| 10 | Ernestine Felder | 20 | Daughter | Cigar Maker | Georgia |
| 11 | Ollie Mae Felder | 18 | Daughter | Maid | Florida |
| 12 | Thomas Felder | 17 | Son | Porter | Florida |
| 13 | Mabell Felder | 14 | Daughter | — | Florida |
| 14 | Pearl Felder | 12 | Daughter | — | Florida |
| 15 | Clarence Felder | 10 | Son | — | Florida |
| 16 | Willie Felder | 9 | Son | — | Florida |
| 17 | Winnie Provitt | 28 | Head | Maid | Florida |
| 18 | James Provitt | 24 | Roomer | Bellman | Georgia |
| 19 | Jimmie Provitt | 5 | Roomer | — | Georgia |
| 20 | Mandy Provitt | 26 | Roomer | Maid | Georgia |
| 31 | Mozelle Kearney | 40 | Lodger | Maid | Florida |
| 32 | Edward T Alexander | 51 | Head | Proprietor | Florida |
| 33 | Hattie C Alexander | 27 | Wife | — | Georgia |
| 34 | Edward T Jr Alexander | 7 | Son | — | Florida |
| 35 | Addie E Alexander | 73 | Mother | — | Florida |
| 36 | Louise S Lewis | 47 | Head | Laundress | South Carolina |
| 37 | Joe Lewis | 23 | Boarder | Orderly | Georgia |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)