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Frank Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clark-County, Ohio
Our Model Tree links this Frank Campbell across the 1920, 1930 and 1940 US Censuses in Clark-County, Ohio (XGBoost, ~Confirmed), with identified parents Ruth & Ruth — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, Ohio |
| Surname | Campbell |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Occupation | Piano Co |
| Industry | PW |
| Class of Worker | 400 |
| Highest Grade | H 4 |
| 1935 Residence | 26 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Piano Co |
| Township / Ward | Springfield |
| Est. Birth Year | ~1919 |
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 Frank | Age | Birth yr |
|---|---|---|---|---|
| Elmet Campbell | Head | — | 45 | ~1895 |
| Robert Campbell | Son | — | 23 | ~1917 |
| Frank Campbell | Son | — | 21 | ~1919 |
| William Campbell | Son | — | 19 | ~1921 |
| Ruth Campbell | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Clark, Ohio
Son, age 1
Clark, Ohio · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Frank E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Clark, Ohio
Son, age 11
Clark, Ohio · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Frank E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Clark-County, Ohio
Son, age 21
Clark-County, Ohio · implied b. ~1919 — 5 household members
| Surname | Campbell |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Occupation | Piano Co |
| Industry | PW |
| Class of Worker | 400 |
| Highest Grade | H 4 |
| 1935 Residence | 26 |
| 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 Frank Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ruth Campbell (~0.92 confidence) and mother Ruth Campbell (~0.92 confidence) and father Elmet Campbell (~0.92 confidence) and father Elmer Campbell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ruth Campbell
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Ruth Campbell
b. ~1894
Source mother
● Household
· direct · ~0.92
Father
Elmet Campbell
b. ~1895
Source father
● Household
· direct · ~0.92
Father
Elmer Campbell
b. ~1896
Source father
● Household
· direct · ~0.92
This person
Anchor record
Frank Campbell
Son · 1940 · age 21 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Robert Campbell
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Campbell
Sibling · 1940 · age 19
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 — Clark-County, Ohio
Open full size
1940 US Federal Census — Clark-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03040-00465)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lawrence Small | 76 | Head | Magazine Pub | Tenn |
| 42 | Mary O Small | 23 | Mother | — | Ohio |
| 43 | Mona Small | 47 | Daughter | Magazine Pub | Ohio |
| 44 | John Walter | 46 | Head | Bakery | Indiana |
| 45 | Florence Walter | 41 | Wife | — | Ohio |
| 46 | Marcyne Walter | 15 | Daughter | — | Ohio |
| 47 | John Jr Walter | 14 | Son | — | Ohio |
| 48 | Elmet Campbell | 45 | Head | Dairy | Ohio |
| 49 | Ruth Campbell | 46 | Wife | — | Ohio |
| 50 | Robert Campbell | 23 | Son | Newspaper Co | Ohio |
| 51 | Frank Campbell THIS PERSON | 21 | Son | Piano Co | Ohio |
| 52 | William Campbell | 19 | Son | Tel & Graph Co | Ohio |
| 53 | William Hall | 66 | Head | Retail Grocery | Ohio |
| 54 | Martha O Hall | 58 | Wife | — | Ohio |
| 55 | Brant Stevens | 43 | Head | Steam Railroad | Ohio |
| 56 | Anne O Stevens | 40 | Wife | — | Ohio |
| 57 | William Stevens | 18 | Son | — | Ohio |
| 58 | Walter Mcclellan | 46 | Head | Contractor | Ohio |
| 59 | Mary O Mcclellan | 40 | Wife | — | Ohio |
| 60 | Lowell Mcclellan | 14 | Son | Daily Newspaper | Ohio |
| 61 | Ruth Mcclellan | 12 | Daughter | — | Ohio |
| 62 | Lammorr Mcclellan | 10 | Son | — | Ohio |
| 63 | Harry O Futtall | 31 | Head | Mfg Co | Ohio |
| 64 | Pearl Futtall | 27 | Wife | — | Ohio |
| 65 | Judith Futtall | 3 | Daughter | — | Ohio |
| 66 | Charles H Robinson | 55 | Head | Machine Tools | Ohio |
| 67 | Elsie Robinson | 50 | Wife | — | Ohio |
| 68 | Richard Robinson | 19 | Son | — | Ohio |
| 69 | Herman Shellhorn | 84 | Head | — | Penn |
| 70 | Blanche Shellhorn | 60 | Daughter | — | Ohio |
| 71 | Daniel Shellhorn | 41 | Head | Lawnmower Mfg Co | Ohio |
| 72 | Letty O Shellhorn | 34 | Wife | Law Office | Ohio |
| 73 | John Robers | 37 | Head | Road Maint | Ohio |
| 74 | Elizabeth Robers | 28 | Wife | — | Ohio |
| 75 | Marlene Robers | 6 | Daughter | — | Ohio |
| 76 | John Jr Robers | 5 | Son | — | Ohio |
| 77 | Darene Robers | 2 | Daughter | — | Ohio |
| 78 | William Brewers | 25 | Head | Casket Co | Ohio |
| 79 | Grace O Brewers | 25 | Wife | — | Ohio |
| 80 | Barbara Brewers | 3 | Daughter | — | Ohio |
Pedigree Summary
Frank + 2 siblings
Gen 1 · 4 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)