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Clarence Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Shelby-County, Iowa
Our Model Tree links this Clarence Campbell across the 1920, 1930 and 1940 US Censuses in Shelby-County, Iowa (XGBoost, ~Confirmed), with identified parents M & Milton — first a head (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Shelby-County, Iowa |
| Surname | Campbell |
| Given Name | Clarence C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Greeley Township |
| 1935 Residence (County) | Shelby |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Greeley Township |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clarence | Age | Birth yr |
|---|---|---|---|---|
| Vina Campbell | Spouse | — | 26 | ~1914 |
| Peggie Campbell | Daughter | — | 3 | ~1937 |
| Gary Campbell | Son | — | 1 | ~1939 |
| Clarence Campbell | Head | — | 31 | ~1909 |
Census Appearances
1920
Shelby, Iowa
Son, age 11
Shelby, Iowa · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farming |
| Industry | At Home |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Shelby, Iowa
Son, age 21
Shelby, Iowa · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Shelby-County, Iowa
Head, age 31
Shelby-County, Iowa · implied b. ~1909 — 4 household members
| Surname | Campbell |
| Given Name | Clarence C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Greeley Township |
| 1935 Residence (County) | Shelby |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Clarence Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father M Campbell (~0.92 confidence) and father Milton Campbell (~0.92 confidence) and mother Martha Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
M Campbell
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Milton Campbell
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Martha Campbell
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Campbell
Head · 1940 · age 31 · b. ~1909 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Shelby-County, Iowa
Open full size
1940 US Federal Census — Shelby-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01204-00134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Isabel C. Miller | 34 | Wife | — | Iowa |
| 42 | Donald Miller | 9 | Son | — | Iowa |
| 43 | Verna N. Miller | 8 | Daughter | — | Iowa |
| 44 | Vernon Miller | 6 | Son | — | Iowa |
| 45 | Eugene Miller | 4 | Son | — | Iowa |
| 46 | Marian Miller | 2 | Son | — | Iowa |
| 47 | Duane Miller | 0 | Son | — | Iowa |
| 48 | Frank D. Eigler | 44 | Head | Farmer | Iowa |
| 49 | Isadore G. Pauley | 34 | Head | Farmer | Iowa |
| 50 | Clara A. Pauley | 35 | Wife | — | Iowa |
| 51 | Gayle Pauley | 13 | Daughter | — | Iowa |
| 52 | Arlen D. Pauley | 2 | Son | — | Iowa |
| 53 | David H. Clark | 58 | Head | Farmer | So. Dakota |
| 54 | Harriet M. Clark | 61 | Wife | — | Iowa |
| 55 | Anna M. Nelson | 47 | Lodger | Teacher | Iowa |
| 56 | Henry B. Nath | 65 | Head | Farmer | Ohio |
| 57 | Minnie Nath | 64 | Wife | Farmer | Illinois |
| 58 | Ralph C. Nath | 34 | Son | Farmer | Iowa |
| 59 | Clarence C. Campbell THIS PERSON | 31 | Head | Farmer | Iowa |
| 60 | Vina L. Campbell | 26 | Wife | — | Montana |
| 61 | Peggie J. Campbell | 3 | Daughter | — | Iowa |
| 62 | Gary L. Campbell | 1 | Son | — | Iowa |
| 63 | Adolph N. Ruschenberg | 39 | Head | Farmer | Iowa |
| 64 | Ada G. Ruschenberg | 38 | Wife | — | Iowa |
| 65 | Gaylord L. Ruschenberg | 13 | Son | — | Iowa |
| 66 | Marilyn J. Ruschenberg | 10 | Daughter | — | Iowa |
| 67 | Carole C. Ruschenberg | 7 | Daughter | — | Iowa |
| 68 | Darlene F. Ruschenberg | 4 | Daughter | — | Iowa |
| 69 | Fred Kabel | 31 | Hired man | Laborer | Iowa |
| 70 | Milton M. Campbell | 51 | Head | Farmer | Iowa |
| 71 | Martha L. Campbell | 51 | Wife | — | Iowa |
| 72 | Clifford D. Campbell | 32 | Head | Farmer | Iowa |
| 73 | Thelma Campbell | 26 | Wife | — | Iowa |
| 74 | Carolyn Campbell | 3 | Daughter | — | Iowa |
| 75 | Glen M. Mayer | 39 | Head | Farmer | Iowa |
| 76 | Carl Terrelager | 42 | Hired man | Laborer | Iowa |
| 77 | Douglas Mayer | 13 | Nephew | — | Iowa |
| 78 | Emil W. Pauley | 28 | Head | Farmer | Iowa |
| 79 | Doris B. Pauley | 23 | Wife | — | Iowa |
| 80 | Dona Mae Pauley | 3 | Daughter | — | Iowa |
Pedigree Summary
Clarence
Gen 1 · 3 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)