MT
Mary Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Mary Thomas across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 3-person household.
Age 71
b. ~1869
Female
Head
Born: Kentucky
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | Kentucky |
| 1935 Residence (City) | 2nd Magisterial District |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | 2Nd Magisterial District |
| Est. Birth Year | ~1869 |
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 |
|---|---|---|---|---|
| Margaret Thomas | Daughter | — | 33 | ~1907 |
| Mary Thomas | Head | — | 71 | ~1869 |
| Annie Thomas | Other | — | 63 | ~1877 |
Census Appearances
1900
Jefferson, Kentucky
Spouse, age 30
Jefferson, Kentucky · implied b. ~1870 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Birth Month | Dec |
| Birth Year | 1870 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Laundress |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1910
Jefferson, Kentucky
Spouse, age 40
Jefferson, Kentucky · implied b. ~1870 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Years Married | 20 |
| Children Born | 4 |
| Children Living | 2 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1920
Jefferson, Kentucky
Spouse, age 49
Jefferson, Kentucky · implied b. ~1871 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Laundress |
| Industry | Private family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Spouse, age 60
Jefferson, Kentucky · implied b. ~1870 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 23 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Head, age 71
Jefferson-County, Kentucky · implied b. ~1869 — 3 household members
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | Kentucky |
| 1935 Residence (City) | 2nd Magisterial District |
| 1935 Residence (County) | Jefferson |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Thomas across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Thomas
Head · 1940 · age 71 · b. ~1869 · Kentucky
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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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01321-00212)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pauline Whitfield | 4 | Daughter | — | Kentucky |
| 42 | Irene Ashley | 40 | Head | — | Kentucky |
| 43 | Annie B. Ashley | 39 | Daughter | — | Kentucky |
| 44 | Luetta Green | 29 | Head | Sewing | Kentucky |
| 45 | John B. Green | 28 | Son | — | Kentucky |
| 46 | Amy G. Green | 7 | Daughter | — | Kentucky |
| 47 | Fred Cartwright | 50 | Head | Laborer | Kentucky |
| 48 | Laura Cartwright | 49 | Wife | — | Kentucky |
| 49 | Norman Cartwright | 17 | Grandson | — | Kentucky |
| 50 | Garrish Mccowen | 55 | Head | Porter | Kentucky |
| 51 | Susie Mccowen | 60 | Wife | — | Kentucky |
| 52 | Thomas Overstreet | 31 | Head | Teacher | Kentucky |
| 53 | Elizabeth Overstreet | 26 | Wife | — | Georgia |
| 54 | Thomas Jr. Overstreet | 2 | Son | — | Kentucky |
| 55 | Mary Thomas THIS PERSON | 71 | Head | — | Kentucky |
| 56 | Annie Thomas | 63 | Cousin | — | Kentucky |
| 57 | Margaret Thomas | 33 | Daughter | — | Kentucky |
| 58 | Mary Mudd | 68 | Head | — | Kentucky |
| 59 | Robert Mudd | 24 | Son | Laborer | Kentucky |
| 60 | Amelia Mudd | 19 | Daughter-in-law | — | Kentucky |
| 61 | Worden Dorsey | 58 | Head | Proprietor | Kentucky |
| 62 | Katie Dorsey | 57 | Wife | — | Kentucky |
| 63 | James Jewell | 54 | Head | — | Kentucky |
| 64 | Nancy Clark | 65 | Head | — | Kentucky |
| 65 | Mattie Clark | 60 | Wife | — | Kentucky |
| 66 | John Dickerson | 48 | Head | Chauffeur | Kentucky |
| 67 | Rosalee Dickerson | 43 | Wife | — | Kentucky |
| 68 | Marvin Dickerson | 14 | Son | — | Kentucky |
| 69 | Irvin Dickerson | 16 | Son | — | Kentucky |
| 70 | Ed Minor Beeler | 67 | Head | — | Kentucky |
| 71 | Minnie Beeler | 57 | Wife | — | Kentucky |
| 72 | James Greathouse | 42 | Head | Hauling | Kentucky |
| 73 | Delia Greathouse | 36 | Wife | — | Kentucky |
| 74 | Patcheld Beeler | 38 | Head | — | Kentucky |
| 75 | Margaret Beeler | 32 | Wife | — | Kentucky |
| 76 | Virgil Sr. Dorsey | 24 | Head | Housework | Kentucky |
| 77 | Phyllis Dorsey | 24 | Wife | — | Kentucky |
| 78 | Virgil Jr. Dorsey | 0 | Son | — | Kentucky |
| 79 | Cora Hoke | 48 | Head | — | Kentucky |
| 80 | Ara Harrison | 33 | Daughter | Maid And Housework | Kentucky |
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)