RC
Richard Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Blue-Earth-County, Minnesota
Our Model Tree links this Richard Campbell across the 1930 and 1940 US Censuses in Blue-Earth-County, Minnesota (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Blue-Earth-County, Minnesota |
| Surname | Campbell |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St James |
| 1935 Residence (County) | Watonwan |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Garden City |
| Est. Birth Year | ~1928 |
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 Richard | Age | Birth yr |
|---|---|---|---|---|
| Ralph Campbell | Son | — | 2 | ~1938 |
| Lois Campbell | Daughter | — | 3 | ~1937 |
| Clinton Campbell | Son | — | 9 | ~1931 |
| Effie Campbell | Spouse | — | 32 | ~1908 |
| Audrey Campbell | Daughter | — | 13 | ~1927 |
| Gordon Campbell | Son | — | 7 | ~1933 |
| Claude Campbell | Head | — | 40 | ~1900 |
| Leora Campbell | Daughter | — | 10 | ~1930 |
| Richard Campbell | Son | — | 12 | ~1928 |
Census Appearances
1930
Blue Earth, …
Son, age 2
Blue Earth, Minnesota · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Richard H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Blue-Earth-County, Minnesota
Son, age 12
Blue-Earth-County, Minnesota · implied b. ~1928 — 9 household members
| Surname | Campbell |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St James |
| 1935 Residence (County) | Watonwan |
| Highest Grade | 7 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Richard Campbell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Richard Campbell
Son · 1940 · age 12 · b. ~1928 · Minnesota
★ You are viewing this record
Sibling
Ralph Campbell
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Campbell
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clinton Campbell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Campbell
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leora Campbell
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Campbell
Sibling · 1940 · age 13
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 — Blue-Earth-County, Minnesota
Open full size
1940 US Federal Census — Blue-Earth-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01908-00136)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Claude Campbell | 40 | Head | Common Labor | Illinois |
| 2 | Effie Campbell | 32 | Wife | — | Iowa |
| 3 | Audrey Campbell | 13 | Daughter | — | Minnesota |
| 4 | Richard Campbell THIS PERSON | 12 | Son | — | Minnesota |
| 5 | Leora Campbell | 10 | Daughter | — | Minnesota |
| 6 | Clinton Campbell | 9 | Son | — | Minnesota |
| 7 | Gordon Campbell | 7 | Son | — | Minnesota |
| 8 | Lois Campbell | 3 | Daughter | — | Minnesota |
| 9 | Ralph Campbell | 2 | Son | — | Minnesota |
| 10 | Flaviane Grew | 39 | Head | Carpenter | Germany |
| 11 | Laura Grew | 34 | Wife | — | Minnesota |
| 12 | Robert Grew | 10 | Son | — | Minnesota |
| 13 | Ruth Grew | 7 | Daughter | — | Minnesota |
| 14 | Elwin Grew | 5 | Son | — | Minnesota |
| 15 | Alice Grew | 4 | Daughter | — | Minnesota |
| 16 | Laurel Grew | 1 | Daughter | — | Minnesota |
| 17 | Edward Roberts | 55 | Head | Common Labor | Minnesota |
| 18 | Pearl Roberts | 33 | Wife | — | Illinois |
| 19 | Lloyd Roberts | 24 | Son | Common Labor | Minnesota |
| 20 | Florence Roberts | 14 | Daughter | — | Minnesota |
| 21 | Betty Roberts | 4 | Daughter | — | Minnesota |
| 22 | Edward Roberts | 1 | Son | — | Minnesota |
| 23 | Floyd Wilson | 67 | Head | Retired | Minnesota |
| 24 | Ada Wilson | 75 | Wife | — | Illinois |
| 25 | Pella Stevens | 73 | Sister-in-law | — | Illinois |
| 26 | John Rice | 59 | Head | Carpenter | Illinois |
| 27 | Eva Rice | 58 | Wife | — | Minnesota |
| 28 | Dale Rice | 18 | Son | — | Minnesota |
| 29 | Elizabeth Rice | 15 | Daughter | — | Minnesota |
| 30 | Lee Johnson | 27 | Head | Common Labor | Nebraska |
| 31 | Velma Johnson | 24 | Wife | — | Iowa |
| 32 | Harnett Johnson | 7 | Son | — | Minnesota |
| 33 | Lloyd Johnson | 4 | Son | — | Minnesota |
| 34 | Elwin Johnson | 2 | Son | — | Minnesota |
| 35 | Ralph Rector | 65 | Head | Common Labor | Minnesota |
| 36 | Theodore Thomas | 62 | Head | Janitor | Minnesota |
| 37 | Minnie Thomas | 56 | Wife | — | Minnesota |
| 38 | Edward Haley | 31 | Head | Principal | Minnesota |
| 39 | Vivian Haley | 28 | Wife | — | Minnesota |
| 40 | Phillip Haley | 5 | Son | — | Minnesota |
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)