MW
Mary Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Fayette-County, Kentucky
Our Model Tree links this Mary Williams across the 1920, 1930 and 1940 US Censuses in Fayette-County, Kentucky (XGBoost, ~Confirmed), with identified parents Mattie — first a spouse (b.~1892), then head of a 6-person household.
Age 48
b. ~1892
Female
Spouse
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Fayette-County, Kentucky |
| Surname | Williams |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Lexington City |
| 1935 Residence (County) | Fayette |
| Additional Details | |
| Occupation | Maid |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 390 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Maid |
| Township / Ward | Lexington City |
| Est. Birth Year | ~1892 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Chisley | Daughter | — | 19 | ~1921 |
| Beatrice Day | Other | — | 29 | ~1911 |
| James Washington | Other | — | 31 | ~1909 |
| John Carter | Other | — | 17 | ~1923 |
| Elizabeth Washington | Other | — | 30 | ~1910 |
| Mary Williams | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Fayette, Kentucky
Daughter, age 26
Fayette, Kentucky · implied b. ~1894 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 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 |
1930
Fayette, Kentucky
Daughter, age 37
Fayette, Kentucky · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 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
Fayette-County, Kentucky
Spouse, age 48
Fayette-County, Kentucky · implied b. ~1892 — 6 household members
| Surname | Williams |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Lexington City |
| 1935 Residence (County) | Fayette |
| Occupation | Maid |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 390 |
| Highest Grade | No 6 |
| 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 Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mattie Taylor (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mattie Taylor
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Williams
Spouse · 1940 · age 48 · b. ~1892 · Kentucky
★ 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 — Fayette-County, Kentucky
Open full size
1940 US Federal Census — Fayette-County, Kentucky
Page Contents
6 people indexed on this census page (nara:1940:m-t0627-01302-00283)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Beatrice Day | 29 | Cousin | Maid | Kentucky |
| 2 | James Washington | 31 | Lodger | Houseman | Kentucky |
| 3 | Elizabeth Washington | 30 | Lodger | Maid | Kentucky |
| 4 | Mary Williams THIS PERSON | 48 | Wife | Maid | Kentucky |
| 10 | Margaret Chisley | 19 | Daughter | Maid | Kentucky |
| 15 | John E Carter | 17 | Nephew | School Aide | Kentucky |
Pedigree Summary
Mary
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)