DC
Donald Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ontario-County, New York
Our Model Tree links this Donald Campbell across the 1930 and 1940 US Censuses in Ontario-County, New York (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 13-person household.
Age 19
b. ~1921
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ontario-County, New York |
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Seneca Town |
| 1935 Residence (County) | Ontario |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 333 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Laborer |
| Township / Ward | Seneca Town |
| Est. Birth Year | ~1921 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Rosalia Campbell | Daughter | — | 9 | ~1931 |
| Wm Campbell | Head | — | 49 | ~1891 |
| Loretta Campbell | Daughter | — | 3 | ~1937 |
| Eileen Campbell | Daughter | — | 6 | ~1934 |
| Loretta Campbell | Spouse | — | 45 | ~1895 |
| Donald Campbell | Son | — | 19 | ~1921 |
| Barbara Campbell | Daughter | — | 8 | ~1932 |
| Phyllis Campbell | Daughter | — | 5 | ~1935 |
| Edward Campbell | Son | — | 10 | ~1930 |
| Howard Campbell | Son | — | 14 | ~1926 |
| Olivia Campbell | Daughter | — | 1 | ~1939 |
| Eleanor Campbell | Daughter | — | 22 | ~1918 |
| Doris Campbell | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Ontario, New …
Son, age 9
Ontario, New York · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Ontario-County, New …
Son, age 19
Ontario-County, New York · implied b. ~1921 — 13 household members
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Seneca Town |
| 1935 Residence (County) | Ontario |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 333 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Donald Campbell
Son · 1940 · age 19 · b. ~1921 · New York
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Sibling
Olivia Campbell
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Campbell
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Campbell
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosalia Campbell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Campbell
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Campbell
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Campbell
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Campbell
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Campbell
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Campbell
Sibling · 1940 · age 17
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 — Ontario-County, New York
Open full size
1940 US Federal Census — Ontario-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02707-00517)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Denton Millard | 45 | Head | Farmer | New York |
| 2 | Dora Millard | 46 | Wife | — | New York |
| 3 | Edwin H. Millard | 25 | Son | Mechanic | New York |
| 4 | Evelyn L. Millard | 21 | Daughter | — | New York |
| 5 | Elva E. Millard | 10 | Daughter | — | New York |
| 6 | Albert Smith | 26 | Hired hand | Laborer | New York |
| 7 | Carl Houston | 45 | Head | Farmer | New York |
| 8 | Lois Houston | 49 | Wife | — | New York |
| 9 | Dean Houston | 16 | Son | — | New York |
| 10 | Clifford S. Smith | 24 | Head | Laborer | New York |
| 11 | Sarah Smith | 25 | Wife | — | New York |
| 12 | David Smith | 3 | Son | — | New York |
| 13 | Robert Smith | 1 | Son | — | New York |
| 14 | Thomas H. Rawlins | 79 | Head | Farmer | England |
| 15 | Elizabeth Rawlins | 67 | Wife | — | New York |
| 16 | Walter D. Henry | 33 | Head | Laborer | West Virginia |
| 17 | Edith Henry | 33 | Wife | — | Pennsylvania |
| 18 | Walter G. Mullens | 2 | Boarder | — | New York |
| 19 | James Mullens | 1 | Boarder | — | New York |
| 20 | Brady Hill | 69 | Head | — | Pennsylvania |
| 21 | Jane Hill | 59 | Wife | — | Pennsylvania |
| 22 | Chas. E. Parker | 59 | Head | Laborer | New York |
| 23 | Clarissa C. Parker | 53 | Wife | — | New York |
| 24 | Wm Campbell | 49 | Head | Farmer | New York |
| 25 | Loretta Campbell | 45 | Wife | — | New York |
| 26 | Eleanor Campbell | 22 | Daughter | House Keeper | New York |
| 27 | Donald Campbell THIS PERSON | 19 | Son | Laborer | New York |
| 28 | Doris Campbell | 17 | Daughter | — | New York |
| 29 | Howard Campbell | 14 | Son | — | New York |
| 30 | Edward Campbell | 10 | Son | — | New York |
| 31 | Rosalia Campbell | 9 | Daughter | — | New York |
| 32 | Barbara Campbell | 8 | Daughter | — | New York |
| 33 | Eileen Campbell | 6 | Daughter | — | New York |
| 34 | Phyllis Campbell | 5 | Daughter | — | New York |
| 35 | Loretta Campbell | 3 | Daughter | — | New York |
| 36 | Olivia Campbell | 1 | Daughter | — | New York |
| 37 | Carl Haag | 65 | Head | Farmer | Germany |
| 38 | Frank Roach | 31 | Son-in-law | Clerk | New York |
| 39 | Reis Roach | 31 | Daughter | — | New York |
| 40 | Wm Roach | 3 | Son | — | New York |
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)