DC
Donald Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Niagara-County, New York
Our Model Tree links this Donald Campbell across the 1910, 1920, 1930 and 1940 US Censuses in Niagara-County, New York (XGBoost, ~Confirmed), with identified parents Rose & Robert — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Niagara-County, New York |
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Lockport |
| 1935 Residence (County) | Niagara |
| Additional Details | |
| Occupation | Repairman |
| Industry | Harrison Radiator |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Repairman |
| Township / Ward | Lockport |
| Est. Birth Year | ~1909 |
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 |
|---|---|---|---|---|
| Phyllis Campbell | Daughter | — | 9 | ~1931 |
| Donald Campbell | Head | — | 31 | ~1909 |
| Julia Campbell | Spouse | — | 28 | ~1912 |
Census Appearances
1910
Niagara, New …
Son, age
Niagara, New York · implied b. ~1910 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1920
Niagara, New …
Other, age 10
Niagara, New York · implied b. ~1910 — 49 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald H |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Niagara, New …
Son, age 21
Niagara, New York · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Donald L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 21 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Trucker |
| Industry | Gear Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Niagara-County, New …
Head, age 31
Niagara-County, New York · implied b. ~1909 — 3 household members
| Surname | Campbell |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Lockport |
| 1935 Residence (County) | Niagara |
| Occupation | Repairman |
| Industry | Harrison Radiator |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| 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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Rose Campbell (~0.92 confidence) and father Robert Campbell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Rose Campbell
b. ~1872
Source mother
● Household
· direct · ~0.92
Father
Robert Campbell
b. ~1874
Source father
● Household
· direct · ~0.92
This person
Anchor record
Donald Campbell
Head · 1940 · age 31 · b. ~1909 · New York
★ 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 — Niagara-County, New York
Open full size
1940 US Federal Census — Niagara-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02695-00855)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jane E Lochte | 9 | Daughter | — | New York |
| 42 | Paul F Lochte | 8 | Son | — | New York |
| 43 | Richard W Lochte | 6 | Son | — | New York |
| 44 | Janice Lochte | 2 | Daughter | — | New York |
| 45 | Anna Brown | 69 | Head | — | New York |
| 46 | Edmond Brown | 36 | Son | Furnace Operator | New York |
| 47 | Fred Schmachack | 57 | Head | Mechanical Helper | Germany |
| 48 | Margaret Schmachack | 58 | Wife | — | New York |
| 49 | Gordon Farrell | 38 | Head | Solderer | New York |
| 50 | Flora E Farrell | 34 | Wife | — | New York |
| 51 | Joyce Farrell | 9 | Daughter | — | New York |
| 52 | James Boine | 32 | Head | Solderer | New York |
| 53 | Helen D Boine | 27 | Wife | — | New York |
| 54 | Ronald Boine | 5 | Son | — | New York |
| 55 | George W Braull | 46 | Head | Baker | New York |
| 56 | Gladys A Braull | 44 | Wife | — | New York |
| 57 | Gloria H Braull | 8 | Daughter | — | New York |
| 58 | Clarence Ganger | 40 | Head | Bookkeeper | New York |
| 59 | Clara Ganger | 40 | Wife | — | New York |
| 60 | Gerald Ganger | 11 | Son | — | New York |
| 61 | Donald Campbell THIS PERSON | 31 | Head | Repairman | New York |
| 62 | Julia Campbell | 28 | Wife | Clustering | New York |
| 63 | Phyllis Campbell | 9 | Daughter | — | New York |
| 64 | Harrison Raymond | 51 | Head | Laborer | New York |
| 65 | Esther Raymond | 51 | Wife | — | New York |
| 66 | Mildred Raymond | 25 | Daughter | — | New York |
| 67 | Sarah Collins | 65 | Head | — | New York |
| 68 | Eugene Smallman | 36 | Head | Janitor | New York |
| 69 | Bernice P Smallman | 31 | Wife | — | New York |
| 70 | Bettie Smallman | 13 | Daughter | — | New York |
| 71 | Ralph Smallman | 11 | Son | — | New York |
| 72 | Eugene Smallman | 4 | Son | — | New York |
| 73 | Henry J Zimmerman | 65 | Head | Blacksmith | New York |
| 74 | Mary C Zimmerman | 65 | Wife | — | New York |
| 75 | William J Sullivan | 36 | Head | Laborer | New York |
| 76 | Frances E Sullivan | 36 | Wife | — | New York |
| 77 | Margaret M Sullivan | 10 | Daughter | — | New York |
| 78 | Mary Mcelree | 67 | Mother-in-law | — | New York |
| 79 | Fred Utel | 48 | Head | Brakeman | New York |
| 80 | Louise E Utel | 43 | Wife | — | New York |
Pedigree Summary
Donald
Gen 1 · 2 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)