MH
Mary Hays — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Douglas-County, Illinois
Our Model Tree links this Mary Hays across the 1930 and 1940 US Censuses in Douglas-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 6-person household.
Age 18
b. ~1922
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Illinois |
| Surname | Hays |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Villa Grove city |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Occupation | 0 |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | 0 |
| Township / Ward | Villa Grove City |
| Est. Birth Year | ~1922 |
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 |
|---|---|---|---|---|
| Ray Hays | Head | — | 51 | ~1889 |
| Vinnie Hays | Son | — | 27 | ~1913 |
| Mary Hays | Daughter | — | 18 | ~1922 |
| Dean Hays | Son | — | 12 | ~1928 |
| Don Hays | Son | — | 21 | ~1919 |
| Eva Hays | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Douglas, Illinois
Daughter, age 8
Douglas, Illinois · implied b. ~1922 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hays |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Douglas-County, Illinois
Daughter, age 18
Douglas-County, Illinois · implied b. ~1922 — 6 household members
| Surname | Hays |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Villa Grove city |
| 1935 Residence (County) | Douglas |
| Occupation | 0 |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Hays across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hays
Daughter · 1940 · age 18 · b. ~1922 · Illinois
★ You are viewing this record
Sibling
Vinnie Hays
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dean Hays
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Don Hays
Sibling · 1940 · age 21
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 — Douglas-County, Illinois
Open full size
1940 US Federal Census — Douglas-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00795-00232)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph Woodworth | 30 | Head | Farming | Illinois |
| 2 | Ruth Woodworth | 29 | Wife | 0 | Kentucky |
| 3 | Scott Woodworth | 7 | Son | — | Illinois |
| 4 | Sue Woodworth | 6 | Daughter | — | Illinois |
| 5 | Kent Woodworth | 2 | Son | — | Illinois |
| 6 | William Watkins | 49 | Head | Drainage | Kentucky |
| 7 | Matilda Watkins | 44 | Wife | 0 | Kentucky |
| 8 | Ora Watkins | 20 | Son | 0 | Illinois |
| 9 | Helen Watkins | 17 | Daughter | 0 | Illinois |
| 10 | Lucille Watkins | 15 | Daughter | 0 | Illinois |
| 11 | George Watkins | 12 | Son | — | Illinois |
| 12 | Mirilla Watkins | 12 | Daughter | — | Illinois |
| 13 | Lyndia Watkins | 4 | Daughter | — | Illinois |
| 14 | Harry W. Watson | 47 | Head | Train Service Brakeman | Pennsylvania |
| 15 | Jessie Watson | 44 | Wife | 0 | Missouri |
| 16 | Harry Watson | 20 | Son | New Worker | Illinois |
| 17 | Alice Watson | 17 | Daughter | 0 | Illinois |
| 18 | Dean Watson | 14 | Son | 0 | Illinois |
| 19 | Mary Jean Watson | 8 | Daughter | — | Illinois |
| 20 | Harry S. Marlett | 45 | Head | Train Service Brakeman | Kansas |
| 21 | Mable Marlett | 40 | Wife | 0 | Illinois |
| 22 | Betty Marlett | 16 | Daughter | 0 | Illinois |
| 23 | Wayne Marlett | 14 | Son | 0 | Illinois |
| 24 | Billie Marlett | 9 | Son | — | Illinois |
| 25 | George W. Morey | 67 | Head | 0 | Illinois |
| 26 | Rachel Morey | 70 | Wife | 0 | Illinois |
| 27 | Bessie Walden | 50 | Head | 0 | Illinois |
| 28 | Elsie Fern Walden | 18 | Daughter | 0 | Missouri |
| 29 | William Walden | 26 | Son | Cook Hotel | Missouri |
| 30 | Ray H. Hays | 51 | Head | Painter | Illinois |
| 31 | Eva Hays | 43 | Wife | 0 | Indiana |
| 32 | Vinnie Hays | 27 | Son | 0 | Illinois |
| 33 | Don Hays | 21 | Son | Clerk | Illinois |
| 34 | Mary Hays THIS PERSON | 18 | Daughter | 0 | Illinois |
| 35 | Dean Hays | 12 | Son | — | Illinois |
| 36 | Kenneth V. Talkington | 21 | Head | Street | Illinois |
| 37 | Mary Talkington | 15 | Wife | 0 | Illinois |
| 38 | Loraine Talkington | 1 | Daughter | — | Illinois |
| 39 | Max W. Former | 38 | Head | Director | Illinois |
| 40 | Velma Former | 28 | Wife | 0 | Illinois |
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)