MC
Mary Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Canyon-County, Idaho
Our Model Tree links this Mary Campbell across the 1920, 1930 and 1940 US Censuses in Canyon-County, Idaho (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 3-person household.
Age 57
b. ~1883
Female
Head
Born: Idaho
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Canyon-County, Idaho |
| Surname | Campbell |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Idaho |
| 1935 Residence (City) | Outside City |
| 1935 Residence (County) | Canyon |
| Additional Details | |
| Industry | Housewife |
| Class of Worker | Own Home |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Township / Ward | Outside City |
| Est. Birth Year | ~1883 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Campbell | Daughter | — | 33 | ~1907 |
| Mary Campbell | Head | — | 57 | ~1883 |
| Charles Campbell | Son | — | 31 | ~1909 |
Census Appearances
1920
Canyon, Idaho
Spouse, age 36
Canyon, Idaho · implied b. ~1884 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Idaho |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
Canyon, Idaho
Head, age 47
Canyon, Idaho · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Mary K. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | Idaho |
| Age at First Marriage | 23 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Manager |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1600 |
| Radio Set | R |
| Veteran | No |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Canyon-County, Idaho
Head, age 57
Canyon-County, Idaho · implied b. ~1883 — 3 household members
| Surname | Campbell |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Idaho |
| 1935 Residence (City) | Outside City |
| 1935 Residence (County) | Canyon |
| Industry | Housewife |
| Class of Worker | Own Home |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 Mary Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Campbell
Head · 1940 · age 57 · b. ~1883 · Idaho
★ 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 — Canyon-County, Idaho
Open full size
1940 US Federal Census — Canyon-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00743-00352)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thelma F Carr | 13 | Daughter | — | Oklahoma |
| 42 | Doris Carr | 11 | Daughter | — | Missouri |
| 43 | Kenneth Carr | 2 | Son | — | Idaho |
| 44 | William H Root | 75 | Head | Farmer | Illinois |
| 45 | Jennie M Root | 71 | Wife | — | Iowa |
| 46 | Elmer Brown | 62 | Head | Farmer | Missouri |
| 47 | Hattie Brown | 61 | Wife | — | Idaho |
| 48 | George F Castle | 72 | Head | Farmer | Illinois |
| 49 | Artie B Castle | 64 | Wife | — | Illinois |
| 50 | Mary Campbell THIS PERSON | 57 | Head | — | Idaho |
| 51 | Margaret Campbell | 33 | Daughter | Teacher | Idaho |
| 52 | Charles Campbell | 31 | Son | Milker|Helper | Idaho |
| 53 | Clarence Stephenson | 48 | Head | Floor Sander | Indiana |
| 54 | Emma Stephenson | 45 | Wife | — | Missouri |
| 55 | Randall Stephenson | 26 | Son | Trucker & Logger | Idaho |
| 56 | Thelma Stephenson | 20 | Daughter | Clerk | Idaho |
| 57 | Charles Stephenson | 18 | Son | New Worker | Idaho |
| 58 | Sidney Stephenson | 17 | Son | — | Idaho |
| 59 | Emma Lou Stephenson | 15 | Daughter | — | Idaho |
| 60 | Robert Stephenson | 13 | Son | — | Idaho |
| 61 | Betty Jo Stephenson | 10 | Daughter | — | Idaho |
| 62 | Peggy Stephenson | 8 | Daughter | — | Idaho |
| 63 | Donna Stephenson | 5 | Daughter | — | Idaho |
| 64 | Robert H Aikman | 45 | Head | Poultryman | Idaho |
| 65 | Dorothy M Aikman | 37 | Wife | — | Iowa |
| 66 | Ruth Aikman | 14 | Daughter | — | Idaho |
| 67 | Mary Aikman | 12 | Daughter | — | Idaho |
| 68 | Dorothy Aikman | 10 | Daughter | — | Idaho |
| 69 | Margaret Aikman | 8 | Daughter | — | Idaho |
| 70 | Phyllis Aikman | 5 | Daughter | — | Idaho |
| 71 | Joann Aikman | 3 | Daughter | — | Idaho |
| 72 | Charles E Rocklitz | 54 | Head | Dairyman | Iowa |
| 73 | Emma E Rocklitz | 46 | Wife | — | Nebraska |
| 74 | Edward Rocklitz | 25 | Son | Truck Driver | Nebraska |
| 75 | Herbert Rocklitz | 22 | Son | Truck Driver | Nebraska |
| 76 | Donald W Rocklitz | 21 | Son | Milker | Nebraska |
| 77 | Lawrence Rocklitz | 17 | Son | Milkman | Nebraska |
| 78 | Wayne H Rocklitz | 5 | Son | — | Idaho |
| 79 | William H Rogers | 66 | Head | Farmer | California |
| 80 | Odesa M Rogers | 66 | Wife | — | Indiana |
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)