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Thelma Anderson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Ohio
Our Model Tree links this Thelma Anderson across the 1930 and 1940 US Censuses in Mercer-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Ohio |
| Surname | Anderson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Jefferson |
| 1935 Residence (County) | Musk |
| Additional Details | |
| Occupation | Housekeeper |
| Industry | Home |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Housekeeper |
| Township / Ward | Jefferson |
| Est. Birth Year | ~1917 |
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 Thelma | Age | Birth yr |
|---|---|---|---|---|
| Ralph Anderson | Son | — | 21 | ~1919 |
| Thelma Anderson | Daughter | — | 23 | ~1917 |
| Mary Anderson | Spouse | — | 54 | ~1886 |
| Byron Anderson | Son | — | 16 | ~1924 |
| Thomas Anderson | Son | — | 12 | ~1928 |
| Olive Anderson | Daughter | — | 19 | ~1921 |
| Charles Anderson | Head | — | 57 | ~1883 |
Census Appearances
1930
Ashtabula, Ohio
Daughter, age 13
Ashtabula, Ohio · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mercer-County, Ohio
Daughter, age 23
Mercer-County, Ohio · implied b. ~1917 — 7 household members
| Surname | Anderson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Jefferson |
| 1935 Residence (County) | Musk |
| Occupation | Housekeeper |
| Industry | Home |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Thelma Anderson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thelma Anderson
Daughter · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
Thomas Anderson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Olive Anderson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Anderson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Byron Anderson
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 — Mercer-County, Ohio
Open full size
1940 US Federal Census — Mercer-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03114-00538)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Richard Jackson | 7 | Son | — | Ohio |
| 42 | Dan Jackson | 5 | Son | — | Ohio |
| 43 | Oron A Crouch | 71 | Head | Farmer | Ohio |
| 44 | Rosa Crouch | 66 | Wife | Housekeeper | Ohio |
| 45 | Oscar Buck | 43 | Head | Farmer | Ohio |
| 46 | Opal @ Buck | 40 | Wife | Housekeeper | Ohio |
| 47 | Helen Buck | 20 | Daughter | Laborer | Ohio |
| 48 | Ruth Buck | 19 | Daughter | Housekeeper | Ohio |
| 49 | Ralph Buck | 16 | Son | — | Ohio |
| 50 | Alice Buck | 13 | Daughter | — | Ohio |
| 51 | Billy Buck | 11 | Son | — | Ohio |
| 52 | Leslie Buck | 7 | Son | — | Ohio |
| 53 | Van D Brandon | 50 | Head | Farmer | Ohio |
| 54 | Mollie Brandon | 43 | Wife | Housekeeper | Ohio |
| 55 | Olen Brandon | 19 | Son | Farmer | Ohio |
| 56 | Dale Brandon | 13 | Son | — | Ohio |
| 57 | Charles D Anderson | 57 | Head | Farmer | Ohio |
| 58 | Mary Jane Anderson | 54 | Wife | Housekeeper | Ohio |
| 59 | Thelma Anderson THIS PERSON | 23 | Daughter | Housekeeper | Ohio |
| 60 | Ralph Anderson | 21 | Son | Farmer | Ohio |
| 61 | Olive Anderson | 19 | Daughter | Clerk | Ohio |
| 62 | Byron Anderson | 16 | Son | — | Ohio |
| 63 | Thomas Anderson | 12 | Son | — | Ohio |
| 64 | Joseph D Mccoy | 75 | Head | Farmer | Ohio |
| 65 | Clara B Mccoy | 72 | Wife | Housekeeper | Michigan |
| 66 | Earl Vantillburg | 52 | Head | Farmer | Ohio |
| 67 | Edith @ Vantillburg | 48 | Wife | Housekeeper | Ohio |
| 68 | Paul Vantillburg | 23 | Son | Farmer | Ohio |
| 69 | Cora Vantillburg | 6 | Daughter | — | Ohio |
| 70 | Paul Kasch | 38 | Head | Plant Supt. | Ohio |
| 71 | Helen @ Kasch | 34 | Wife | Housekeeper | Indiana |
| 72 | Miriam Kasch | 10 | Daughter | — | Ohio |
| 73 | Betty Lou Kasch | 6 | Daughter | — | Ohio |
| 74 | Earl Schluecher | 56 | Head | Engineer | Illinois |
| 75 | Charlotte Schluecher | 56 | Wife | Housekeeper | Ohio |
| 76 | George Kasch | 31 | Head | Vice President | Ohio |
| 77 | Martha Kasch | 28 | Wife | Housekeeper | Indiana |
| 78 | James Earle Kasch | 1 | Son | — | Ohio |
| 79 | James D Custer | 67 | Head | Caretaker | Ohio |
| 80 | Margaret Custer | 54 | Wife | Housekeeper | Ohio |
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)