RC
Robert Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Umatilla-County, Oregon
Our Model Tree links this Robert Campbell across the 1920, 1930 and 1940 US Censuses in Umatilla-County, Oregon (XGBoost, ~Confirmed), with identified parents Grace & William — first a head (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Head
Born: Oregon
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Umatilla-County, Oregon |
| Surname | Campbell |
| Given Name | Robert D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Athena |
| 1935 Residence (County) | Umatilla |
| Additional Details | |
| Occupation | farming |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 78 |
| Income (1939) | 2000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Oregon |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Occupation | Farming |
| Township / Ward | Pct Precinct 4 |
| Est. Birth Year | ~1914 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Anna Campbell | Daughter | — | ~1940 | |
| Robert Campbell | Head | — | 26 | ~1914 |
| Leota Ayres | Other | — | 37 | ~1903 |
| De Campbell | Spouse | — | 19 | ~1921 |
Census Appearances
1920
Umatilla, Oregon
Son, age 4
Umatilla, Oregon · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Robert E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Oregon |
| Occupation | none |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Umatilla, Oregon
Son, age 15
Umatilla, Oregon · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Umatilla-County, Oregon
Head, age 26
Umatilla-County, Oregon · implied b. ~1914 — 4 household members
| Surname | Campbell |
| Given Name | Robert D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Athena |
| 1935 Residence (County) | Umatilla |
| Occupation | farming |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 78 |
| Income (1939) | 2000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Oregon |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 Robert Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Grace Campbell (~0.92 confidence) and father William Campbell (~0.92 confidence) and father William Campbell (~0.92 confidence) and mother Susan Campbell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Grace Campbell
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
William Campbell
b. ~1881
Source father
● Household
· direct · ~0.92
Father
William Campbell
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Susan Campbell
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Campbell
Head · 1940 · age 26 · b. ~1914 · Oregon
★ 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 — Umatilla-County, Oregon
Open full size
1940 US Federal Census — Umatilla-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03380-00306)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donald V. Robinson | 4 | Son | — | Oregon |
| 42 | Marie M. Robinson | 1 | Daughter | — | Oregon |
| 43 | Ralph Kenner | 36 | Head | Farming | Pennsylvania |
| 44 | Avis Kenner | 32 | Wife | Housekeeper | Iowa |
| 45 | Kathleen Kenner | 14 | Daughter | — | Washington |
| 46 | Gloria Kenner | 12 | Daughter | — | Washington |
| 47 | Herman Mueller | 39 | Head | Farming | Oregon |
| 48 | Hattie Mueller | 46 | Wife | — | Kansas |
| 49 | Alaine Mueller | 11 | Daughter | — | Oregon |
| 50 | Victor Jack | 21 | Nephew | Farm Hand | Oregon |
| 51 | Clarence D. Hansen | 54 | Head | Farming | Oregon |
| 52 | Bertha Hansen | 57 | Wife | — | Wisconsin |
| 53 | Rex Rahl | 39 | Hired hand | Farm Hand | Oregon |
| 54 | J. Hennessey | 62 | Hired hand | Farm Hand | Oregon |
| 55 | Delbert J. Campbell | 56 | Head | Farming | Missouri |
| 56 | Iva Campbell | 57 | Wife | — | Oregon |
| 57 | Robert D. Campbell THIS PERSON | 26 | Head | Farming | Oregon |
| 58 | De Marine Campbell | 19 | Wife | — | Idaho |
| 59 | Anna B. Campbell | 0 | Daughter | — | Washington |
| 60 | Leota Ayres | 37 | Housekeeper | Housekeeping | Missouri |
| 61 | Lucerne W. Owen | 48 | Head | Farming | Missouri |
| 62 | Lois M. Owen | 44 | Wife | Clerical | Oregon |
| 63 | Eilleen Owen | 21 | Daughter | Housekeeper | Oregon |
| 64 | Phyllis M. Owen | 15 | Daughter | — | Oregon |
| 65 | Joseph Biamont | 19 | Farm hand | Farm Hand | Oregon |
| 66 | Carl A. Cheez | 74 | Head | Farmer | Sweden |
| 67 | Mary Cheez | 70 | Wife | — | Ohio |
| 68 | Edward B. Rockhill | 39 | Head | Farmer | Oregon |
| 69 | Esther Rockhill | 32 | Wife | — | Oregon |
| 70 | Herman Rockhill | 0 | Son | — | Oregon |
| 71 | Roy Bunch | 25 | Farm hand | Farm Hand | Oregon |
| 72 | James Davis | 33 | Farm hand | Farm Hand | Kentucky |
| 73 | James Rutter | 45 | Head | Farmer | N. Dakota |
| 74 | Grace Rutter | 51 | Wife | — | Missouri |
| 75 | Carl Sievers | 22 | Step son | Buying & Selling | Oregon |
| 76 | Jeanette Sievers | 15 | Step daughter | — | Oregon |
| 77 | Georgiann Sievers | 14 | Step daughter | — | Oregon |
| 78 | J. E. Miller | 52 | Farm hand | Farm Hand | Kansas |
| 79 | Lawrence Stevens | 38 | Farm hand | Farm Hand | Oregon |
| 80 | Verla Stevens | 20 | Housekeeper | Housekeeper | Oregon |
Pedigree Summary
Robert
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)