MJ
Mary Jefferson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bryan-County, Oklahoma
Our Model Tree links this Mary Jefferson across the 1920, 1930 and 1940 US Censuses in Bryan-County, Oklahoma (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 3-person household.
Age 70
b. ~1870
Female
Head
Born: Mississippi
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Bryan-County, Oklahoma |
| Surname | Jefferson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | American Indian |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Mississippi |
| 1935 Residence (City) | Achille Town |
| 1935 Residence (County) | Bryan |
| Additional Details | |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Township / Ward | Achille Town |
| Est. Birth Year | ~1870 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Velma Jefferson | Daughter | — | 37 | ~1903 |
| Susie Jefferson | Daughter | — | 36 | ~1904 |
| Mary Jefferson | Head | — | 70 | ~1870 |
Census Appearances
1920
Bryan, Oklahoma
Head, age 48
Bryan, Oklahoma · implied b. ~1872 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jefferson |
| Given Name | Mary J. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
Bryan, Oklahoma
Head, age 56
Bryan, Oklahoma · implied b. ~1874 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jefferson |
| Given Name | Mary J |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | American Indian |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Mississippi |
| Father's Birthplace | Full Blood Choctaw |
| Mother's Birthplace | Full Blood Choctaw |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Bryan-County, Oklahoma
Head, age 70
Bryan-County, Oklahoma · implied b. ~1870 — 3 household members
| Surname | Jefferson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | American Indian |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Mississippi |
| 1935 Residence (City) | Achille Town |
| 1935 Residence (County) | Bryan |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 Jefferson 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 Jefferson
Head · 1940 · age 70 · b. ~1870 · 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 — Bryan-County, Oklahoma
Open full size
1940 US Federal Census — Bryan-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03278-00011)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Olva Parton | 33 | Wife | — | Oklahoma |
| 2 | Wanda Jean Parton | 5 | Daughter | — | Oklahoma |
| 3 | Helen M. Parton | 3 | Daughter | — | Oklahoma |
| 4 | Lee Parton | 70 | Father | — | Louisiana |
| 5 | Clea Parton | 33 | Brother | Laborer | Oklahoma |
| 6 | Mae Grimes | 40 | Head | Saleslady | Tennessee |
| 7 | Owen Grimes | 17 | Son | — | Oklahoma |
| 8 | Joyce Grimes | 11 | Daughter | — | Oklahoma |
| 9 | Tommie Grimes | 8 | Son | — | Oklahoma |
| 10 | Bill Rucker | 56 | Head | — | Texas |
| 11 | Emma Rucker | 56 | Wife | — | Texas |
| 12 | Laverne Rucker | 17 | Daughter | — | Oklahoma |
| 13 | Mary Jefferson THIS PERSON | 70 | Head | — | Mississippi |
| 14 | Velma Jefferson | 37 | Daughter | — | Mississippi |
| 15 | Susie Jefferson | 36 | Daughter | — | Mississippi |
| 16 | L. L. Cole | 42 | Head | Truck Driver | Texas |
| 17 | Irene Cole | 7 | Daughter | — | Oklahoma |
| 18 | C. E. Luckey | 29 | Head | Truck Driver | Texas |
| 19 | Beverly Luckey | 22 | Wife | — | Oklahoma |
| 20 | Bellie Jo Luckey | 5 | Daughter | — | Oklahoma |
| 21 | Bobby Jane Luckey | 2 | Daughter | — | Oklahoma |
| 22 | Maurice Luckey | 23 | Head | Woodwork | Louisiana |
| 23 | Mae Luckey | 26 | Wife | — | Oklahoma |
| 24 | J. B. Willey | 50 | Head | Janitor | Texas |
| 25 | Allice Willey | 47 | Wife | — | Oklahoma |
| 26 | Louise Willey | 10 | Daughter | — | Oklahoma |
| 27 | G. R. Goad | 46 | Head | — | Tennessee |
| 28 | Rachel Goad | 54 | Wife | — | Georgia |
| 29 | Doris E. Linton | 25 | Lodger | Teacher | Oklahoma |
| 30 | Virginia Pearce | 24 | Lodger | Teacher | Oklahoma |
| 31 | M. F. Ramsey | 44 | Head | Manager | Texas |
| 32 | Mona Ramsey | 50 | Wife | — | Texas |
| 33 | Darrel Ramsey | 24 | Son | Salesman | Oklahoma |
| 34 | Romona Ramsey | 10 | Daughter | — | Oklahoma |
| 35 | Lawrence Nemew | 14 | Nephew | — | Oklahoma |
| 36 | F. A. Hummel | 84 | Head | — | Wisconsin |
| 37 | Ida Hummel | 68 | Wife | — | Illinois |
| 38 | J. H. Phillips | 70 | Head | — | Alabama |
| 39 | Mandie Phillips | 67 | Wife | — | Arkansas |
| 40 | Lon Griffin | 54 | Head | Laborer | Mississippi |
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)