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John Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ellis-County, Oklahoma
Our Model Tree links this John Campbell across the 1920, 1930 and 1940 US Censuses in Ellis-County, Oklahoma (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 6-person household.
Age 65
b. ~1875
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ellis-County, Oklahoma |
| Surname | Campbell |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Worth |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 3 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Iley Township |
| Est. Birth Year | ~1875 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anne Campbell | Daughter | — | 14 | ~1926 |
| Lila Campbell | Daughter | — | 16 | ~1924 |
| John Campbell | Head | — | 65 | ~1875 |
| Truman Campbell | Son | — | 11 | ~1929 |
| Robert Campbell | Son | — | 8 | ~1932 |
| Elva Campbell | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Ellis, Oklahoma
Head, age 43
Ellis, Oklahoma · implied b. ~1877 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Ellis, Oklahoma
Head, age 53
Ellis, Oklahoma · implied b. ~1877 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John M. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 33 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Carpenter |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Ellis-County, Oklahoma
Head, age 65
Ellis-County, Oklahoma · implied b. ~1875 — 6 household members
| Surname | Campbell |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Worth |
| Class of Worker | 0 |
| Highest Grade | 3 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 John Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Campbell
Head · 1940 · age 65 · b. ~1875 · Oklahoma
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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 — Ellis-County, Oklahoma
Open full size
1940 US Federal Census — Ellis-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03291-00448)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph A Porter | 9 | son | — | Oklahoma |
| 42 | Earl M Porter | 30 | Head | Farmer | Kansas |
| 43 | Zula M Porter | 30 | Wife | — | Oklahoma |
| 44 | Earl M Porter | 8 | son | — | Oklahoma |
| 45 | Zula M Porter | 6 | daughter | — | Oklahoma |
| 46 | John R Porter | 4 | son | — | Oklahoma |
| 47 | Alon R Porter | 2 | son | — | Oklahoma |
| 48 | Orville E Bull | 26 | Head | Farmer | Oklahoma |
| 49 | Norma J Bull | 21 | Wife | — | Oklahoma |
| 50 | Walter Hixon | 66 | Head | Farmer | Texas |
| 51 | Catherine Hixon | 51 | Wife | — | Texas |
| 52 | Benjamin F Rucker | 29 | Head | Farmer | Texas |
| 53 | Mary A Rucker | 20 | Wife | — | Texas |
| 54 | John M Campbell THIS PERSON | 65 | Head | — | Missouri |
| 55 | Elva M Campbell | 48 | Wife | — | Texas |
| 56 | Lila A Campbell | 16 | daughter | Housekeeping | Oklahoma |
| 57 | Anne C Campbell | 14 | daughter | Housekeeping | Oklahoma |
| 58 | Truman V Campbell | 11 | son | — | Oklahoma |
| 59 | Robert L Campbell | 8 | son | — | Oklahoma |
| 60 | James H Allred | 50 | Head | Farmer | Texas |
| 61 | Nellie C Allred | 34 | Wife | — | Arkansas |
| 62 | Ada J Allred | 14 | daughter | Scholar | Oklahoma |
| 63 | Edna F Allred | 13 | daughter | Scholar | Oklahoma |
| 64 | Lucinda J Allred | 85 | Mother | — | Illinois |
| 65 | Herbert M Allred | 44 | Brother | Farm Laborer | Texas |
| 66 | Rosa Gross | 62 | Head | — | Austria |
| 67 | Emma N Gross | 26 | daughter | — | Oklahoma |
| 68 | Alice U Lynch | 77 | Head | — | Texas |
| 69 | Irwin J Luckey | 39 | Head | Ranch Mgr | Oklahoma |
| 70 | Bessie A Luckey | 38 | Wife | — | Oklahoma |
| 71 | Cloanne L Luckey | 16 | daughter | Scholar | Oklahoma |
| 72 | Burl K Luckey | 9 | son | — | Oklahoma |
| 73 | Irvin Boyd | 17 | Hired man | Laborer | Oklahoma |
| 74 | Paul L Holloway | 44 | Head | Manager | Iowa |
| 75 | Beatrice M Holloway | 42 | Wife | — | Oklahoma |
| 76 | Darwin K Holloway | 22 | son | Welder & Painter | Oklahoma |
| 77 | Marvin D Holloway | 20 | son | Surveyor | Oklahoma |
| 78 | Rex B Holloway | 19 | son | Jockey | Oklahoma |
| 79 | Josie Lee Holloway | 17 | daughter | Scholar | Oklahoma |
| 80 | Vaden R Holloway | 13 | son | Scholar | Oklahoma |
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)