RC
Robert Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ellsworth-County, Kansas
Our Model Tree links this Robert Campbell across the 1920, 1930 and 1940 US Censuses in Ellsworth-County, Kansas (XGBoost, ~Confirmed), with identified parents Art & Mary — first a head (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ellsworth-County, Kansas |
| Surname | Campbell |
| Given Name | Robert W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Ellsworth |
| Additional Details | |
| Occupation | Farming |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Farming |
| Township / Ward | Thomas Township |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Robert Campbell | Head | — | 23 | ~1917 |
| Mary Campbell | Other | — | 55 | ~1885 |
| Warren Campbell | Son | — | ~1940 | |
| Mary Campbell | Spouse | — | 19 | ~1921 |
Census Appearances
1920
Ellsworth, Kansas
Son, age 2
Ellsworth, Kansas · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Kansas |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Ellsworth, Kansas
Son, age 12
Ellsworth, Kansas · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Kansas |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Ellsworth-County, Kansas
Head, age 23
Ellsworth-County, Kansas · implied b. ~1917 — 4 household members
| Surname | Campbell |
| Given Name | Robert W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Ellsworth |
| Occupation | Farming |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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: father Art Campbell (~0.92 confidence) and mother Mary Campbell (~0.92 confidence) and mother Mary Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Art Campbell
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Mary Campbell
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Mary Campbell
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Campbell
Head · 1940 · age 23 · b. ~1917 · Kansas
★ 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 — Ellsworth-County, Kansas
Open full size
1940 US Federal Census — Ellsworth-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01231-00232)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William B. Handlin | 48 | Head | Farming | Kansas |
| 2 | Ruth M. Handlin | 37 | Wife | — | Kansas |
| 3 | Dorothy J. Handlin | 15 | Daughter | — | Kansas |
| 4 | William B. Jr. Handlin | 11 | Son | — | Kansas |
| 5 | Elrene M. Handlin | 9 | Daughter | — | Kansas |
| 6 | Mary Lou Handlin | 3 | Daughter | — | Kansas |
| 7 | Ralf H. Handlin | 1 | Son | — | Kansas |
| 8 | Mortain W. Kaska | 26 | Head | Farming | Kansas |
| 9 | Florence E. Kaska | 24 | Wife | — | Montana |
| 10 | Robert S. Livingston | 29 | Head | Farming | Kansas |
| 11 | Genevieve E. Livingston | 27 | Wife | — | Kansas |
| 12 | Francis A. Kratzer | 30 | Head | Farming | Kansas |
| 13 | Edith F. Kratzer | 20 | Wife | — | Kansas |
| 14 | Edward E. Janzen | 69 | Head | Farming | Illinois |
| 15 | Rose Janzen | 65 | Wife | — | Ohio |
| 16 | O. W. Holmes | 65 | Head | Farming | Illinois |
| 17 | Clara S. Holmes | 70 | Wife | — | Illinois |
| 18 | H. E. Handlin | 34 | Head | Farming | Kansas |
| 19 | Agnes H. Handlin | 37 | Wife | — | Kansas |
| 20 | Darlene G. Handlin | 4 | Daughter | — | Kansas |
| 21 | Janice S. Handlin | 2 | Daughter | — | Kansas |
| 22 | William Hiler | 42 | Head | Farming | Kansas |
| 23 | Mary L. Hiler | 38 | Wife | — | Kansas |
| 24 | Clarence W. Hiler | 13 | Son | — | Kansas |
| 25 | Marcella J. Hiler | 9 | Daughter | — | Kansas |
| 26 | H. Brackna | 65 | Head | Farming | Michigan |
| 27 | R. A. Brackna | 63 | Brother | Farming | Kansas |
| 28 | Maren E. Brackna | 28 | Sister-in-law | — | Kansas |
| 29 | Robert W. Campbell THIS PERSON | 23 | Head | Farming | Kansas |
| 30 | Mary M. Campbell | 19 | Wife | — | Kansas |
| 31 | Warren Campbell | 0 | Son | — | Kansas |
| 32 | Mary B. Campbell | 55 | Mother | — | Kansas |
| 33 | E. S. Leonard | 73 | Head | Farming | Ohio |
| 34 | Edd Johansson | 32 | Partner | Farming | Kansas |
| 35 | William Ekleberry | 36 | Head | Farming | Kansas |
| 36 | Hazel E. Ekleberry | 29 | Wife | — | Kansas |
| 37 | James Holmes | 87 | Head | Retired | New York |
| 38 | H. H. Janssen | 63 | Head | Farming | Illinois |
| 39 | Willard F. Janssen | 25 | Son | Farming | Kansas |
| 40 | Esther M. Janssen | 55 | Wife | — | Oregon |
Pedigree Summary
Robert
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)