MC
Martha Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ottawa-County, Oklahoma
Our Model Tree links this Martha Campbell across the 1930 and 1940 US Censuses in Ottawa-County, Oklahoma (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 10-person household.
Age 44
b. ~1896
Female
Spouse
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ottawa-County, Oklahoma |
| Surname | Campbell |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Commerce city |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | S 6 |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Township / Ward | Commerce City |
| Est. Birth Year | ~1896 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Maxine Campbell | Daughter | — | 10 | ~1930 |
| Eugene Campbell | Son | — | 17 | ~1923 |
| Mildred Campbell | Daughter | — | 12 | ~1928 |
| Benny Campbell | Son | — | 14 | ~1926 |
| Arthur Campbell | Head | — | 52 | ~1888 |
| Martha Campbell | Spouse | — | 44 | ~1896 |
| June Campbell | Daughter | — | 4 | ~1936 |
| Joan Campbell | Daughter | — | 2 | ~1938 |
| Jewell Campbell | Daughter | — | 24 | ~1916 |
| J Campbell | Son | — | 20 | ~1920 |
Census Appearances
1930
Ottawa, Oklahoma
Other, age 34
Ottawa, Oklahoma · implied b. ~1896 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Martha |
| Relationship to Head | wife-H |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| Age at First Marriage | 15 |
| Father's Birthplace | United States |
| Mother's Birthplace | Tennessee |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Ottawa-County, Oklahoma
Spouse, age 44
Ottawa-County, Oklahoma · implied b. ~1896 — 10 household members
| Surname | Campbell |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Commerce city |
| Class of Worker | 0 |
| Highest Grade | S 6 |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 Martha Campbell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Campbell
Spouse · 1940 · age 44 · b. ~1896 · Oklahoma
★ 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 — Ottawa-County, Oklahoma
Open full size
1940 US Federal Census — Ottawa-County, Oklahoma
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03321-00108)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Betty Jean Wright | 14 | Daughter | — | Oklahoma |
| 2 | Marjorie Wright | 13 | Daughter | — | Oklahoma |
| 3 | Donald Wright | 10 | Son | — | Oklahoma |
| 4 | Norma Jane Wright | 6 | Daughter | — | Oklahoma |
| 5 | Melvina Garner | 65 | Head | Old Age Assistance | Missouri |
| 6 | Fanny Green | 65 | Head | Old Age Assistance | Iowa |
| 7 | Lee Green | 42 | Head | Repair Man | Kansas |
| 8 | Lera Green | 37 | Wife | — | Kansas |
| 9 | Arthur Campbell | 52 | Head | Carpenter | Missouri |
| 10 | Martha Campbell THIS PERSON | 44 | Wife | — | Oklahoma |
| 11 | Jewell Campbell | 24 | Daughter | Clerk | Oklahoma |
| 12 | J. L. Campbell | 20 | Son | Carpenter Helper | Oklahoma |
| 13 | Eugene Campbell | 17 | Son | — | Oklahoma |
| 14 | Benny Campbell | 14 | Son | — | Oklahoma |
| 15 | Mildred Campbell | 12 | Daughter | — | Oklahoma |
| 16 | Maxine Campbell | 10 | Daughter | — | Oklahoma |
| 17 | June Campbell | 4 | Daughter | — | Oklahoma |
| 18 | Joan Campbell | 2 | Daughter | — | Oklahoma |
| 20 | Edward Noakes | 68 | Head | Old Age Assistance | Mississippi |
| 21 | Minnie Noakes | 62 | Wife | — | Missouri |
| 22 | Bert Turner | 27 | Head | Carpenter Helper | Illinois |
| 23 | Pernie Turner | 19 | Wife | — | Kansas |
| 24 | Loretta Turner | 5 | Daughter | — | Oklahoma |
| 25 | Eulah Turner | 3 | Daughter | — | Oklahoma |
| 26 | Colene Turner | 2 | Daughter | — | Oklahoma |
| 27 | Leon E. Turner | 3 | Son | — | Oklahoma |
| 28 | Ray Rogers | 23 | Brother Law | Shoveler | Missouri |
| 29 | Beulah Rogers | 16 | Sister Law | — | Oklahoma |
| 30 | Bernice M. Yocum | 65 | Head | — | Illinois |
| 31 | Ruth Patsy Yocum | 26 | Daughter | Foreman Sewing | Missouri |
| 32 | Mary Louise Yocum | 14 | Grand Daughter | — | Oklahoma |
| 33 | Ralph Crabtree | 34 | Head | Shoveler | Oklahoma |
| 34 | Marie Crabtree | 33 | Wife | — | Kansas |
| 35 | Helen Crabtree | 11 | Daughter | — | Oklahoma |
| 36 | Barbara Crabtree | 9 | Daughter | — | Oklahoma |
| 37 | Kenneth Crabtree | 7 | Son | — | Oklahoma |
| 38 | Grace Crabtree | 3 | Daughter | — | Oklahoma |
| 39 | Creta Crabtree | 2 | Daughter | — | Oklahoma |
| 40 | Mathenya Crabtree | 0 | Daughter | — | Oklahoma |
Related Census Records
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)