DC
David Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this David Campbell across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 4-person household.
Age 60
b. ~1880
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Campbell |
| Given Name | David G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Rock Island City |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | Brakeman |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1800 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Brakeman |
| Township / Ward | Rock Island City |
| Est. Birth Year | ~1880 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| Inez Cruzen | Daughter | — | 35 | ~1905 |
| Beverly Cruzen | Other | — | 12 | ~1928 |
| Ada Campbell | Spouse | — | 58 | ~1882 |
| David Campbell | Head | — | 60 | ~1880 |
Census Appearances
1920
Rock Island, …
Head, age 39
Rock Island, Illinois · implied b. ~1881 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | David A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Indiana |
| Occupation | Stock Man |
| Industry | Arsenal |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Rock Island, …
Head, age 50
Rock Island, Illinois · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | David A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Indiana |
| Occupation | Brakeman |
| Industry | Rock Island R. R. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Rock-Island-County, Illinois
Head, age 60
Rock-Island-County, Illinois · implied b. ~1880 — 4 household members
| Surname | Campbell |
| Given Name | David G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Rock Island City |
| 1935 Residence (County) | Rock Island |
| Occupation | Brakeman |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1800 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 David Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
David Campbell
Head · 1940 · age 60 · b. ~1880 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00876-00570)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Barbara R. Keepers | 11 | Daughter | — | Illinois |
| 2 | Yostler Betty Keepers | 18 | Lodger | No Ho Ho Ho | Illinois |
| 3 | Christian Roch | 65 | Head | Letter Carrier | Illinois |
| 4 | Ruth J. Roch | 45 | Wife | — | Illinois |
| 5 | Ruth Roch | 15 | Daughter | — | Illinois |
| 6 | Dorothy A. Roch | 11 | Daughter | — | Illinois |
| 7 | Hedwig Wellman | 70 | Mother-in-law | — | Germany |
| 8 | George Schneider | 50 | Head | Owner | Illinois |
| 9 | Elizabeth S. Schneider | 44 | Wife | — | Illinois |
| 10 | Elizabeth Schneider | 13 | Daughter | — | Illinois |
| 11 | George Schneider | 8 | Son | — | Illinois |
| 12 | John A. Morrison | 72 | Head | Conductor | Pennsylvania |
| 13 | Katherine A. Morrison | 72 | Wife | — | Illinois |
| 14 | Florence P. Morrison | 52 | Daughter | High School Teacher | Iowa |
| 15 | David G. Campbell THIS PERSON | 60 | Head | Brakeman | Iowa |
| 16 | Ada E. Campbell | 58 | Wife | — | Iowa |
| 17 | Inez G. Cruzen | 35 | Daughter | — | Illinois |
| 18 | Beverly Cruzen | 12 | Granddaughter | — | Illinois |
| 19 | Ardo C. Saitzer | 42 | Head | Shop Foreman | Illinois |
| 20 | Helen A. Saitzer | 40 | Wife | — | Norway |
| 21 | Thomas J. Campbell | 65 | Head | — | Illinois |
| 22 | Emma P. Campbell | 64 | Wife | — | Illinois |
| 23 | Leo Montel | 35 | Son-in-law | Collector | Illinois |
| 24 | Pauline K. Montel | 34 | Daughter | — | Illinois |
| 25 | Collette Montel | 5 | Granddaughter | — | Illinois |
| 26 | Cathleen Montel | 2 | Granddaughter | — | Illinois |
| 27 | Thomas W. Naab | 40 | Head | Proprietor | Illinois |
| 28 | Helen A. Naab | 34 | Wife | — | Illinois |
| 29 | Helen G. Naab | 13 | Daughter | — | Illinois |
| 30 | Mary V. Naab | 11 | Daughter | — | Illinois |
| 31 | Veronica A. Naab | 8 | Daughter | — | Illinois |
| 32 | Lillian C. Naab | 6 | Daughter | — | Illinois |
| 33 | Mary Costello | 61 | Mother-in-law | — | Pennsylvania |
| 34 | Truman Jr. Plantz | 48 | Head | Lawyer | Illinois |
| 35 | Nina D. Plantz | 46 | Wife | — | Oklahoma |
| 36 | Truman Jr. Plantz | 19 | Son | — | Illinois |
| 37 | Nina B. Plantz | 17 | Daughter | — | Illinois |
| 38 | Andrew F. Plantz | 15 | Son | — | Iowa |
| 39 | Helen D. Plantz | 13 | Daughter | — | Illinois |
| 40 | Nancy J. Plantz | 7 | Daughter | — | Illinois |
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)