RT
Ralph Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scioto-County, Ohio
Our Model Tree links this Ralph Thomas across the 1920, 1930 and 1940 US Censuses in Scioto-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1899), then head of a 5-person household.
Age 41
b. ~1899
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scioto-County, Ohio |
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Portsmouth |
| 1935 Residence (County) | Scioto |
| Additional Details | |
| Occupation | Mechanic |
| Industry | City Works |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1450 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Mechanic |
| Township / Ward | Portsmouth |
| Est. Birth Year | ~1899 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Joan Thomas | Daughter | — | 17 | ~1923 |
| John Thomas | Son | — | 10 | ~1930 |
| James Thomas | Son | — | 4 | ~1936 |
| Evelyn Thomas | Spouse | — | 42 | ~1898 |
| Ralph Thomas | Head | — | 41 | ~1899 |
Census Appearances
1920
Scioto, Ohio
Head, age 21
Scioto, Ohio · implied b. ~1899 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Machinist |
| Industry | Steel Plant |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Scioto, Ohio
Head, age 31
Scioto, Ohio · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 31 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Fireman |
| Industry | City Service |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30.00 |
| Veteran | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Scioto-County, Ohio
Head, age 41
Scioto-County, Ohio · implied b. ~1899 — 5 household members
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Portsmouth |
| 1935 Residence (County) | Scioto |
| Occupation | Mechanic |
| Industry | City Works |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1450 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Ralph Thomas
Head · 1940 · age 41 · b. ~1899 · Ohio
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Scioto-County, Ohio
Open full size
1940 US Federal Census — Scioto-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03143-00243)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joyce A. Delebar | 5 | daughter | — | Ohio |
| 42 | Wood Willie Delebar | 64 | father-in-law | Laborer | Kentucky |
| 43 | R. O. Perdue | 70 | head | — | Ohio |
| 44 | Mollie Perdue | 66 | wife | — | Ohio |
| 45 | Ruth Ann Perdue | 12 | grand daughter | — | Ohio |
| 46 | Harry L. Craig | 46 | roomer | Grader Retread | Ohio |
| 47 | Jessie Craig | 30 | roomer | Waitress | Arkansas |
| 48 | George S. Collins | 69 | head | Machine Operator | Ohio |
| 49 | Mabel G. Collins | 43 | daughter | — | Ohio |
| 50 | Ralph Thomas THIS PERSON | 41 | head | Mechanic | Indiana |
| 51 | Evelyn M. Thomas | 42 | wife | — | Ohio |
| 52 | Joan Thomas | 17 | daughter | — | Ohio |
| 53 | John Thomas | 10 | son | — | Ohio |
| 54 | James Thomas | 4 | son | — | Ohio |
| 55 | Harry H. Owsley | 61 | head | Clerk | Kentucky |
| 56 | Albert L. Owsley | 43 | brother | Farm Hand | Kentucky |
| 57 | Margaret Owsley | 53 | sister | — | Kentucky |
| 58 | Basil A. Keaton | 40 | boarder | Fireman | Ohio |
| 59 | Homer Yance | 48 | head | Mail Helper | Ohio |
| 60 | Garnet Yance | 37 | wife | — | Ohio |
| 61 | Norma J. Yance | 11 | daughter | — | Ohio |
| 62 | William Yance | 4 | son | — | Ohio |
| 63 | Jane L. Yance | 1 | daughter | — | Ohio |
| 64 | Raymond Davis | 21 | head | Laborer | Ohio |
| 65 | Gertrude Davis | 25 | wife | — | Kentucky |
| 66 | Shirley May Davis | 2 | daughter | — | Ohio |
| 67 | Margaret Meyer | 76 | head | — | Ohio |
| 68 | Emma B. Meyer | 46 | daughter | Lining Dept | Ohio |
| 69 | Joseph A. Messmer | 43 | head | Mechanic | Ohio |
| 70 | Adeline Messmer | 37 | wife | — | W. Virginia |
| 71 | Jessie Dutton | 72 | head | — | Canada |
| 72 | Cora Bond | 44 | head | Top Cutter | Kentucky |
| 73 | Rose Castle | 45 | partner | Rubbing Eyelets | Kentucky |
| 74 | John Emmert | 48 | head | Clerk | Ohio |
| 75 | Florence E. Emmert | 45 | wife | — | W. Virginia |
| 76 | Mary Murchon | 55 | head | — | Pennsylvania |
| 77 | William Murchon | 25 | son | Truck Driver | Ohio |
| 78 | Harriet Murchon | 19 | daughter | — | Ohio |
| 79 | Sherman Murchon | 30 | son | Saw Mill | Ohio |
| 80 | Mary Murchon | 23 | daughter-in-law | — | W. Virginia |
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)