RT
Ralph Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rapides-County, Louisiana
Our Model Tree links this Ralph Thomas across the 1930 and 1940 US Censuses in Rapides-County, Louisiana (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rapides-County, Louisiana |
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Alexandria |
| 1935 Residence (County) | Rapides |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | Alexandria |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Sidney Thomas | Son | — | 18 | ~1922 |
| Ralph Thomas | Son | — | 12 | ~1928 |
| Ruth Thomas | Daughter | — | 7 | ~1933 |
| Olevia Thomas | Spouse | — | 39 | ~1901 |
| Dennis Thomas | Son | — | 5 | ~1935 |
| Sidney Thomas | Head | — | 44 | ~1896 |
| Ernestine Thomas | Daughter | — | 11 | ~1929 |
| Mabel Thomas | Other | — | 17 | ~1923 |
| Laurentine Thomas | Daughter | — | 14 | ~1926 |
| Morris Thomas | Son | — | 20 | ~1920 |
Census Appearances
1930
Rapides, Louisiana
Son, age 3
Rapides, Louisiana · implied b. ~1927 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Rapides-County, Louisiana
Son, age 12
Rapides-County, Louisiana · implied b. ~1928 — 10 household members
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Alexandria |
| 1935 Residence (County) | Rapides |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Ralph Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ralph Thomas
Son · 1940 · age 12 · b. ~1928 · Louisiana
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Sibling
Sidney Thomas
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laurentine Thomas
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Thomas
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Thomas
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Thomas
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernestine Thomas
Sibling · 1940 · age 11
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 — Rapides-County, Louisiana
Open full size
1940 US Federal Census — Rapides-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01441-00700)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | S. A. Dupree | 71 | Mother | — | Louisiana |
| 2 | Jesse Crosley | 50 | Head | Janitor | Mississippi |
| 3 | Sally Crosley | 49 | Wife | — | Louisiana |
| 4 | Charlie Crosley | 22 | Nephew | Cleaner | Mississippi |
| 5 | Daisy Le Gras | 66 | Head | — | Louisiana |
| 6 | James Le Gras | 24 | Son | Chauffeur | Louisiana |
| 7 | Joseph Le Gras | 29 | Son | Fills Cans | Louisiana |
| 8 | Grace Le Gras | 23 | Daughter in law | — | Louisiana |
| 9 | William T. Le Gras | 7 | Grandson | — | Louisiana |
| 10 | Bernard Le Gras | 4 | Grandson | — | Louisiana |
| 11 | Henry P. Le Gras | 3 | Grandson | — | Louisiana |
| 12 | Anna Liza Weaver | 61 | Head | — | Louisiana |
| 13 | Ivory Edwards | 34 | Son in law | Concrete Finisher | Louisiana |
| 14 | Anna Edwards | 33 | Daughter | — | Louisiana |
| 15 | Iriah Edwards | 7 | Grandson | — | Louisiana |
| 16 | George Young | 70 | Head | — | Louisiana |
| 17 | Lucy Holmes | 58 | Sister | Servant | Louisiana |
| 18 | Sidney Thomas | 44 | Head | Janitor | Louisiana |
| 19 | Olevia Thomas | 39 | Wife | — | Louisiana |
| 20 | Sidney Jr. Thomas | 18 | Son | — | Louisiana |
| 21 | Laurentine Thomas | 14 | Daughter | — | Louisiana |
| 22 | Ralph Thomas THIS PERSON | 12 | Son | — | Louisiana |
| 23 | Ernestine Thomas | 11 | Daughter | — | Louisiana |
| 24 | Ruth Mae Thomas | 7 | Daughter | — | Louisiana |
| 25 | Dennis Thomas | 5 | Son | — | Louisiana |
| 26 | Morris Thomas | 20 | Son | Storeroom Helper | Louisiana |
| 27 | Mabel Thomas | 17 | Daughter in law | — | Louisiana |
| 28 | Willie Martin | 32 | Head | Works Crane | Louisiana |
| 29 | Hattie Martin | 20 | Wife | — | Louisiana |
| 30 | Willie D. Martin | 0 | Daughter | — | Louisiana |
| 31 | Albert Randolph | 40 | Head | Janitor | Louisiana |
| 32 | Oley Randolph | 36 | Wife | — | Louisiana |
| 33 | Wilma Randolph | 13 | Son | — | Louisiana |
| 34 | Castelle Lavallie | 29 | Sister in law | — | Louisiana |
| 35 | Francis Jr. Lavallie | 2 | Nephew | — | Louisiana |
| 36 | Charles Davis | 36 | Head | Delivery Man | Louisiana |
| 37 | Dora Davis | 26 | Wife | Maid | Louisiana |
| 38 | Maurice C. Davis | 8 | Son | — | Louisiana |
| 39 | Olympia Rawan | 47 | Mother in law | Maid | Louisiana |
| 40 | Maria Allen | 74 | Head | — | Louisiana |
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)