DC
David Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this David Campbell across the 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 10-person household.
Age 48
b. ~1892
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Campbell |
| Given Name | David E. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Mason City |
| 1935 Residence (County) | Cerro Gordo |
| Additional Details | |
| Occupation | house painter |
| Industry | own contractor |
| Class of Worker | OA |
| Income (1939) | 340 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Painter |
| Township / Ward | Mason City |
| Est. Birth Year | ~1892 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| David Campbell | Head | — | 48 | ~1892 |
| Loretta Campbell | Spouse | — | 49 | ~1891 |
| Marice Campbell | Daughter | — | 22 | ~1918 |
| Thomas Campbell | Son | — | 20 | ~1920 |
| John Campbell | Son | — | 6 | ~1934 |
| Mary Campbell | Daughter | — | 17 | ~1923 |
| La Campbell | Daughter | — | 15 | ~1925 |
| Joseph Campbell | Son | — | 24 | ~1916 |
| Ervin Campbell | Son | — | 25 | ~1915 |
| Virginia Campbell | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Cerro Gordo, …
Head, age 38
Cerro Gordo, Iowa · implied b. ~1892 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | David L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 22 |
| Father's Birthplace | United States |
| Mother's Birthplace | United States |
| Occupation | Salesman |
| Industry | Fruit Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cerro-Gordo-County, Iowa
Head, age 48
Cerro-Gordo-County, Iowa · implied b. ~1892 — 10 household members
| Surname | Campbell |
| Given Name | David E. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Mason City |
| 1935 Residence (County) | Cerro Gordo |
| Occupation | house painter |
| Industry | own contractor |
| Class of Worker | OA |
| Income (1939) | 340 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| 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 David Campbell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
David Campbell
Head · 1940 · age 48 · b. ~1892 · Iowa
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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 — Cerro-Gordo-County, Iowa
Open full size
1940 US Federal Census — Cerro-Gordo-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01146-00724)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry L. Kephart | 24 | son | Salesman | Iowa |
| 2 | Doris H. Kephart | 19 | daughter | — | Iowa |
| 3 | John E. Johnson | 50 | lodger | Woodworker | Minnesota |
| 4 | Marvin J. Larsen | 26 | lodger | Fireman | Iowa |
| 5 | Newton J. Van Maren | 42 | head | Travelling Freight & Passenger Agent | Iowa |
| 6 | Catherine Van Maren | 41 | wife | — | Iowa |
| 7 | Newton P. Jr. Van Maren | 20 | son | — | Iowa |
| 8 | W. E. Van Maren | 17 | son | — | Iowa |
| 9 | Robert Van Maren | 10 | son | — | Iowa |
| 10 | Kathleen T. Van Maren | 7 | daughter | — | Iowa |
| 11 | James D. Van Maren | 5 | son | — | Iowa |
| 12 | Mamie O. Lunn | 47 | head | Owner-Manager | Minnesota |
| 13 | Owen W. Lunn | 21 | son | Cake Froster | Minnesota |
| 14 | Delores M. Lunn | 10 | daughter | — | Minnesota |
| 15 | Jacob Jr. Frank | 24 | son-in-law | Laborer | Iowa |
| 16 | Lucille Frank | 22 | daughter | Salesgirl | Minnesota |
| 17 | Howard W. Gephart | 21 | son-in-law | Truck Driver | Minnesota |
| 18 | Lenore Gephart | 19 | daughter | — | Minnesota |
| 19 | Barbara E. File | 56 | head | — | Minnesota |
| 20 | Lee L. Johnson | 40 | lodger | Telegrapher | Iowa |
| 21 | Gladys Johnson | 33 | lodger-wife | — | Minnesota |
| 22 | David E. Campbell THIS PERSON | 48 | head | House Painter | Iowa |
| 23 | Loretta Campbell | 49 | wife | — | Iowa |
| 24 | Ervin F. Campbell | 25 | son | Salesman | Iowa |
| 25 | Joseph H. Campbell | 24 | son | Bellhop | Iowa |
| 26 | Marice Campbell | 22 | daughter | Beauty Operator | Iowa |
| 27 | Thomas J. Campbell | 20 | son | Butcher | Iowa |
| 28 | Mary L. Campbell | 17 | daughter | Salesgirl | Iowa |
| 29 | La Vonne Campbell | 15 | daughter | — | Iowa |
| 30 | Virginia Campbell | 9 | daughter | — | Iowa |
| 31 | John E. Campbell | 6 | son | — | Iowa |
| 32 | Eugene J. Haires | 32 | head | Pharmacist | Iowa |
| 33 | Francis C. Haires | 32 | wife | — | Iowa |
| 34 | Otto S. Nielson | 48 | head | Decorator | Denmark |
| 35 | Mabel M. Nielson | 35 | wife | Owner-Manager | Iowa |
| 36 | Homer S. Nielson | 14 | son | — | South Dakota |
| 37 | Ramona H. Nielson | 11 | daughter | — | South Dakota |
| 38 | Louis F. Wachter | 33 | head | Farmer | Missouri |
| 39 | Rosa E. Wachter | 34 | wife | Salesgirl | South Dakota |
| 40 | John C. Mccrary | 42 | head | Truck Manager | Iowa |
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)