DC
Donald Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Fairfield-County, Ohio
Our Model Tree links this Donald Campbell across the 1920, 1930 and 1940 US Censuses in Fairfield-County, Ohio (XGBoost, ~Confirmed), with identified parents Edgar & Edgar — first a son (b.~1919), then head of a 9-person household.
Age 21
b. ~1919
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Fairfield-County, Ohio |
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fairfield |
| Additional Details | |
| Occupation | laborer |
| Industry | road project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 987 |
| Highest Grade | 8 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Laborer |
| Township / Ward | Bloom Twp |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Melvin Campbell | Son | — | 22 | ~1918 |
| Paul Campbell | Son | — | 15 | ~1925 |
| Grace Campbell | Spouse | — | 41 | ~1899 |
| Merlin Campbell | Son | — | 7 | ~1933 |
| Richard Campbell | Son | — | 3 | ~1937 |
| Edgar Campbell | Head | — | 50 | ~1890 |
| Robert Campbell | Son | — | 18 | ~1922 |
| Donald Campbell | Son | — | 21 | ~1919 |
| Gerald Campbell | Son | — | 11 | ~1929 |
Census Appearances
1920
Fairfield, Ohio
Son, age
Fairfield, Ohio · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Fairfield, Ohio
Son, age 11
Fairfield, Ohio · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald 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 |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Fairfield-County, Ohio
Son, age 21
Fairfield-County, Ohio · implied b. ~1919 — 9 household members
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fairfield |
| Occupation | laborer |
| Industry | road project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 987 |
| Highest Grade | 8 |
| 1935 Residence | Ohio |
| 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 Donald Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edgar Campbell (~0.92 confidence) and father Edgar Campbell (~0.92 confidence) and father Eldred Campbell (~0.92 confidence) and mother Grace Campbell (~0.92 confidence) and mother Hope Campbell (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edgar Campbell
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Edgar Campbell
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Eldred Campbell
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Grace Campbell
b. ~1899
Source mother
● Household
· direct · ~0.92
Mother
Hope Campbell
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Campbell
Son · 1940 · age 21 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Gerald Campbell
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Campbell
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Merlin Campbell
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Campbell
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Campbell
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Campbell
Sibling · 1940 · age 22
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 — Fairfield-County, Ohio
Open full size
1940 US Federal Census — Fairfield-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03065-00156)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph R. Mcfarland | 20 | son | Farm Laborer | Ohio |
| 2 | Harold E. Mcfarland | 17 | son | Attendant | Ohio |
| 3 | Wayne C. Mcfarland | 15 | son | — | Ohio |
| 4 | Mark L. Mcfarland | 13 | son | — | Ohio |
| 5 | Dorothy L. Mcfarland | 10 | daughter | — | Ohio |
| 6 | Leota K. Mcfarland | 8 | daughter | — | Ohio |
| 7 | Alice Jane Mcfarland | 5 | daughter | — | Ohio |
| 8 | Melvin Benson | 32 | head | Farmer | Ohio |
| 9 | Mary E. Benson | 30 | wife | — | Ohio |
| 10 | Gene Ann Benson | 8 | daughter | — | Ohio |
| 11 | Melvin D. Benson | 7 | son | — | Ohio |
| 12 | Robert H. Benson | 5 | son | — | Ohio |
| 13 | Jerry H. Benson | 3 | son | — | Ohio |
| 14 | Samuel G. Spitzer | 75 | head | Farmer | Ohio |
| 15 | J. W. Hawk | 59 | head | Restaurant Mgr | Ohio |
| 16 | Mildred Hawk | 47 | wife | — | Ohio |
| 17 | Joan Hawk | 14 | daughter | — | Ohio |
| 18 | Edgar C. Campbell | 50 | head | Painter | Ohio |
| 19 | Grace C. Campbell | 41 | wife | — | Ohio |
| 20 | Melvin Campbell | 22 | son | Painter | Ohio |
| 21 | Donald Campbell THIS PERSON | 21 | son | Laborer | Ohio |
| 22 | Robert Campbell | 18 | son | New Worker | Ohio |
| 23 | Paul Campbell | 15 | son | — | Ohio |
| 24 | Gerald Campbell | 11 | son | — | Ohio |
| 25 | Merlin Campbell | 7 | son | — | Ohio |
| 26 | Richard Campbell | 3 | son | — | Ohio |
| 27 | Harley G. Benson | 67 | head | — | Ohio |
| 28 | Dovie A. Benson | 66 | wife | — | Ohio |
| 29 | Paul H. Benson | 23 | son | Farm Laborer | Ohio |
| 30 | Clifford D. Pofman | 34 | head | Farmer | Ohio |
| 31 | Marian Pofman | 30 | wife | — | Ohio |
| 32 | Charlotte Pofman | 8 | daughter | — | Ohio |
| 33 | Rebecca Sue Pofman | 2 | daughter | — | Ohio |
| 34 | Esther Hawk | 19 | lodger | Housekeeper | Ohio |
| 35 | Frank M. Cofman | 47 | head | Farmer | Ohio |
| 36 | Nellie M. Cofman | 45 | wife | — | Ohio |
| 37 | Wilma S. Cofman | 24 | daughter | Cashier | Ohio |
| 38 | Clara M. Cofman | 20 | daughter | Secretary | Ohio |
| 39 | Gladys M. Cofman | 19 | daughter | Library Assistant | Ohio |
| 40 | Warren S. Cofman | 16 | son | — | Ohio |
Pedigree Summary
Donald + 6 siblings
Gen 1 · 5 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)