MG
Mary Graham — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Seminole-County, Oklahoma
Our Model Tree links this Mary Graham across the 1920, 1930 and 1940 US Censuses in Seminole-County, Oklahoma (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 5-person household.
Age 61
b. ~1879
Female
Spouse
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Seminole-County, Oklahoma |
| Surname | Graham |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Seminole |
| 1935 Residence (County) | Seminole |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Oklahoma |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Wolf Township |
| Est. Birth Year | ~1879 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| A Graham | Head | — | 64 | ~1876 |
| Harry Graham | Son | — | 25 | ~1915 |
| Odie Graham | Son | — | 30 | ~1910 |
| Onie Graham | Son | — | 34 | ~1906 |
| Mary Graham | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Seminole, Oklahoma
Spouse, age 41
Seminole, Oklahoma · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Graham |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Seminole, Oklahoma
Spouse, age 53
Seminole, Oklahoma · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Graham |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 20 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Seminole-County, Oklahoma
Spouse, age 61
Seminole-County, Oklahoma · implied b. ~1879 — 5 household members
| Surname | Graham |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Seminole |
| 1935 Residence (County) | Seminole |
| Highest Grade | 7 |
| 1935 Residence | Oklahoma |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Mary Graham across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Graham
Spouse · 1940 · age 61 · b. ~1879 · 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 — Seminole-County, Oklahoma
Open full size
1940 US Federal Census — Seminole-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03332-00807)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Virginia Carpenter | 1 | daughter | — | Oklahoma |
| 42 | Brakon|Braker Williams | 32 | head | Farmer | Oklahoma |
| 43 | Edith Williams | 29 | wife | — | Oklahoma |
| 44 | Harold Dean Williams | 11 | son | — | Oklahoma |
| 45 | Velda Fern Williams | 5 | daughter | — | Oklahoma |
| 46 | A. B. Graham | 64 | head | Farm Laborer | Alabama |
| 47 | Mary A. Graham THIS PERSON | 61 | wife | — | Alabama |
| 48 | Onie Graham | 34 | son | Farm Laborer | Alabama |
| 49 | Odie Graham | 30 | son | Farm Laborer | Alabama |
| 50 | Harry Graham | 25 | son | Farm Laborer | Alabama |
| 51 | Redus C. Yerby | 21 | head | Farmer | Alabama |
| 52 | Minnie Lee Yerby | 18 | wife | — | Arkansas |
| 53 | Donald Lee Yerby | 2 | son | — | Oklahoma |
| 54 | C. A. Posey | 30 | head | Farmer | Oklahoma |
| 55 | Ozie May Posey | 26 | wife | — | Alabama |
| 56 | Charles Posey | 4 | son | — | Oklahoma |
| 57 | Floyd Northam | 33 | head | Farmer | Oklahoma |
| 58 | Bessie Northam | 32 | wife | Farm Laborer | Arkansas |
| 59 | Gloma Jean Northam | 12 | daughter | — | Oklahoma |
| 60 | Lowell Northam | 10 | son | — | Oklahoma |
| 61 | Doyle Northam | 5 | son | — | Oklahoma |
| 62 | Richard Northam | 2 | son | — | Oklahoma |
| 63 | Wilma Northam | 3 | daughter | — | Oklahoma |
| 64 | William Walker | 52 | head | Farmer | Arkansas |
| 65 | Mae Walker | 41 | wife | — | Arkansas |
| 66 | Dorman Walker | 20 | son | Farm Laborer | Oklahoma |
| 67 | Oalcie Walker | 15 | daughter | — | California |
| 68 | Violet Walker | 11 | daughter | — | Oklahoma |
| 69 | Billy Walker | 9 | son | — | Oklahoma |
| 70 | A. J. Walker | 8 | son | — | Oklahoma |
| 71 | Edward Pierce | 37 | head | Foreman Of Gang | Arkansas |
| 72 | Lilly Pierce | 35 | wife | Cotton Picker | Arkansas |
| 73 | Mildred Pierce | 17 | daughter | Cotton Picker | Oklahoma |
| 74 | Ed Junior Pierce | 13 | son | — | Oklahoma |
| 75 | Charles Pierce | 7 | son | — | Oklahoma |
| 76 | Woodrow Fowler | 23 | head | Farmer | Alabama |
| 77 | Florence Fowler | 29 | wife | — | Missouri |
| 78 | Carl W. Robertson | 35 | head | Farmer | Alabama |
| 79 | Lillie Robertson | 31 | wife | — | Oklahoma |
| 80 | John Joe Robertson | 22 | head | Farm Laborer | 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)