DC
Donald Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Michigan
Our Model Tree links this Donald Campbell across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Michigan (XGBoost, ~Confirmed), with identified parents Geo & George — first a head (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Michigan |
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | St. Clair |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Mate |
| Industry | Lake Transportation |
| Class of Worker | PW |
| Hours Worked | 18 |
| Income (1939) | 900 |
| Highest Grade | H-4 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Mate |
| Township / Ward | Marine City |
| Est. Birth Year | ~1912 |
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 Donald | Age | Birth yr |
|---|---|---|---|---|
| Donald Campbell | Son | — | 7 | ~1933 |
| Donald Campbell | Head | — | 28 | ~1912 |
| Grace Campbell | Spouse | — | 26 | ~1914 |
Census Appearances
1920
St Clair, …
Son, age 8
St Clair, Michigan · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
St Clair, …
Son, age 18
St Clair, Michigan · implied b. ~1912 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
St.-Clair-County, Michigan
Head, age 28
St.-Clair-County, Michigan · implied b. ~1912 — 3 household members
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | St. Clair |
| 1935 Residence (County) | St. Clair |
| Occupation | Mate |
| Industry | Lake Transportation |
| Class of Worker | PW |
| Hours Worked | 18 |
| Income (1939) | 900 |
| Highest Grade | H-4 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Donald Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Geo Campbell (~0.92 confidence) and father George Campbell (~0.92 confidence) and mother Cora Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Geo Campbell
b. ~1876
Source father
● Household
· direct · ~0.92
Father
George Campbell
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Cora Campbell
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Campbell
Head · 1940 · age 28 · b. ~1912 · Michigan
★ 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 — St.-Clair-County, Michigan
Open full size
1940 US Federal Census — St.-Clair-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01815-00665)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ben H. Benedict | 50 | Head | Carpenter | Ohio |
| 2 | Olive Benedict | 48 | Wife | Seamstress | Ohio |
| 3 | Ardith Benedict | 13 | Daughter | — | Michigan |
| 4 | Axie Vossen | 22 | Lodger | Waitress | Michigan |
| 5 | Abigail Kuhn | 57 | Head | Voice Teacher | Michigan |
| 6 | Madelyn Sicken | 49 | Partner | Receptionist | Michigan |
| 7 | Francis Beaurin | 35 | Head | Proprietor | Michigan |
| 8 | Loutrell Beaurin | 35 | Wife | — | Michigan |
| 9 | Robert Beaurin | 11 | Son | — | Michigan |
| 10 | Jacqueline Beaurin | 7 | Daughter | — | Michigan |
| 11 | Vaughan Springborn | 37 | Brother-in-law | Decorator | Michigan |
| 12 | Mary G. Emory | 46 | Head | Supervisor | Ohio |
| 13 | Ione A. Emory | 71 | Mother | — | Ohio |
| 14 | Herbert Decker | 50 | Head | Electrician | Michigan |
| 15 | Emma Decker | 43 | Wife | — | Tennessee |
| 16 | James A. Lypy | 30 | Head | Laborer | Michigan |
| 17 | Mildred Lypy | 18 | Wife | — | Michigan |
| 18 | Mary Elizabeth Lypy | 0 | Daughter | — | Michigan |
| 19 | Francis Benedict | 25 | Head | Laborer | Ohio |
| 20 | Mary Benedict | 19 | Wife | — | Michigan |
| 21 | Edna L. Benedict | 1 | Daughter | — | Michigan |
| 22 | William Beier | 36 | Head | Manager | Michigan |
| 23 | Elvira Beier | 35 | Wife | — | Michigan |
| 24 | Laraine Beier | 9 | Daughter | — | Michigan |
| 25 | Frederick R. Beattie | 67 | Head | — | Virginia |
| 26 | Luke J. Hanel | 67 | Head | Retired Captain | Michigan |
| 27 | Agnes Hanel | 60 | Wife | — | Michigan |
| 28 | William Hanel | 22 | Son | Packer | Michigan |
| 29 | William Kliemann | 76 | Head | — | Michigan |
| 30 | Nellie Kliemann | 68 | Wife | — | Canada-English |
| 31 | Marcella Kliemann | 40 | Daughter | — | Michigan |
| 32 | Hilda Kliemann | 38 | Daughter | — | Michigan |
| 33 | Nellie Bonniff | 73 | Head | — | Michigan |
| 34 | Frank Merrill | 68 | Brother | — | Michigan |
| 35 | Donald Campbell THIS PERSON | 28 | Head | Mate | Michigan |
| 36 | Grace Campbell | 26 | Wife | — | Michigan |
| 37 | Donald Campbell | 7 | Son | — | Michigan |
| 38 | Julia Hahn | 27 | Head | — | Michigan |
| 39 | John Hahn | 4 | Son | — | Michigan |
| 40 | Grace Mary Hahn | 1 | Daughter | — | Michigan |
Pedigree Summary
Donald
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)