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Mary Mills — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clay-County, Kentucky
Our Model Tree links this Mary Mills across the 1920, 1930 and 1940 US Censuses in Clay-County, Kentucky (XGBoost, ~Confirmed), with identified parents Peale & Perry — first a daughter (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clay-County, Kentucky |
| Surname | Mills |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. No. 1 |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Laborer |
| Township / Ward | Mag Dist No 1 |
| Est. Birth Year | ~1919 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Georgia Mills | Daughter | — | 23 | ~1917 |
| Lydia Mills | Daughter | — | 12 | ~1928 |
| Cora Mills | Daughter | — | 5 | ~1935 |
| Mary Mills | Daughter | — | 21 | ~1919 |
| Perry Mills | Head | — | 53 | ~1887 |
| Theo Mills | Son | — | 23 | ~1917 |
| Ora Mills | Son | — | 7 | ~1933 |
| Millie Mills | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Clay, Kentucky
Daughter, age 1
Clay, Kentucky · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mills |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Clay, Kentucky
Daughter, age 11
Clay, Kentucky · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mills |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Clay-County, Kentucky
Daughter, age 21
Clay-County, Kentucky · implied b. ~1919 — 8 household members
| Surname | Mills |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. No. 1 |
| 1935 Residence (County) | Clay |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| 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 Mills across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Peale Mills (~0.92 confidence) and father Perry Mills (~0.92 confidence) and mother Millie Mills (~0.92 confidence) and mother Mittie Mills (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peale Mills
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Perry Mills
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Millie Mills
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Mittie Mills
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Mills
Daughter · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Cora Mills
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ora Mills
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lydia Mills
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Georgia Mills
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theo Mills
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Clay-County, Kentucky
Open full size
1940 US Federal Census — Clay-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01296-00148)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Georgia Hicks | 21 | Wife | — | Kentucky |
| 42 | Dill Hicks | 5 | Son | — | Kentucky |
| 43 | Myrtle Hicks | 4 | Daughter | — | Kentucky |
| 44 | Lester Hicks | 2 | Son | — | Kentucky |
| 45 | Tommie Root | 51 | Head | Farmer | Kentucky |
| 46 | Ellen Root | 56 | Sister | — | Kentucky |
| 47 | W. M. Hensley | 66 | Head | Farmer | Kentucky |
| 48 | Lucy Hensley | 64 | Wife | — | Kentucky |
| 49 | Dollie Hensley | 21 | Daughter | Seamstress | Kentucky |
| 50 | Billie Ray Hensley | 5 | Grand-son | — | Kentucky |
| 51 | Russell Hensley | 11 | Son | — | Kentucky |
| 52 | Lizzie Mills | 44 | Head | Farm Operator | Kentucky |
| 53 | Lelia Mills | 50 | Daughter | — | Kentucky |
| 54 | George Root | 52 | Nephew | Farmer | Kentucky |
| 55 | Perry Mills | 53 | Head | Farmer | Kentucky |
| 56 | Millie B. Mills | 44 | Wife | Laborer | Kentucky |
| 57 | Theo Mills | 23 | Son | Laborer | Kentucky |
| 58 | Georgia Mills | 23 | Daughter | Laborer | Kentucky |
| 59 | Mary Mills THIS PERSON | 21 | Daughter | Laborer | Kentucky |
| 60 | Lydia Pearl Mills | 12 | Daughter | — | Kentucky |
| 61 | Ora Mills | 7 | Son | — | Kentucky |
| 62 | Cora Jean Mills | 5 | Daughter | — | Kentucky |
| 63 | Acia Hicks | 38 | Head | Farmer | Kentucky |
| 64 | Minnie Hicks | 29 | Wife | — | Kentucky |
| 65 | Jimmie Hicks | 13 | Son | — | Kentucky |
| 66 | Eli Hicks | 10 | Son | — | Kentucky |
| 67 | Houston Hicks | 6 | Son | — | Kentucky |
| 68 | Theo Hicks | 5 | Son | — | Kentucky |
| 69 | Troy Hicks | 3 | Son | — | Kentucky |
| 70 | Millie Hicks | 1 | Daughter | — | Kentucky |
| 71 | Chester Root | 35 | Head | Farmer | Kentucky |
| 72 | Maggie Root | 36 | Wife | — | Kentucky |
| 73 | Matt Root | 17 | Son | Laborer | Kentucky |
| 74 | Cinda Root | 15 | Daughter | — | Kentucky |
| 75 | Henry Ford Root | 11 | Son | — | Kentucky |
| 76 | Charles Root | 8 | Son | — | Kentucky |
| 77 | James Hicks | 40 | Head | Farmer | Kentucky |
| 78 | Dora Hicks | 36 | Wife | — | Kentucky |
| 79 | James Jr. Hicks | 11 | Son | — | Kentucky |
| 80 | Albert Hicks | 10 | Son | — | Kentucky |
Pedigree Summary
Mary + 5 siblings
Gen 1 · 4 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)