MH
Mary Hays — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Monroe-County, Indiana
Our Model Tree links this Mary Hays across the 1930 and 1940 US Censuses in Monroe-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Monroe-County, Indiana |
| Surname | Hays |
| Given Name | Mary Ann |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Polk |
| 1935 Residence (County) | Monroe |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Polk |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Woodrow Hays | Son | — | 18 | ~1922 |
| Alvin Hays | Son | — | 16 | ~1924 |
| Mary Hays | Daughter | — | 11 | ~1929 |
| Roscoe Hays | Head | — | 46 | ~1894 |
| Lula Hays | Other | — | 33 | ~1907 |
| Verla Hays | Daughter | — | 8 | ~1932 |
| Betty Hays | Daughter | — | 13 | ~1927 |
| Ruth Hays | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Monroe, Indiana
Daughter, age 2
Monroe, Indiana · implied b. ~1928 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hays |
| Given Name | Mable |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Monroe-County, Indiana
Daughter, age 11
Monroe-County, Indiana · implied b. ~1929 — 8 household members
| Surname | Hays |
| Given Name | Mary Ann |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Polk |
| 1935 Residence (County) | Monroe |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 11 · b. ~1929 · Indiana
★ You are viewing this record
Sibling
Woodrow Hays
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Hays
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Verla Hays
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Hays
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alvin Hays
Sibling · 1940 · age 16
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 — Monroe-County, Indiana
Open full size
1940 US Federal Census — Monroe-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01079-00903)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy Patton | 29 | head | Saw Mill | Indiana |
| 42 | Louise Patton | 28 | wife | House Keeper | Indiana |
| 43 | Maxine Patton | 9 | daughter | — | Indiana |
| 44 | Lois Patton | 7 | daughter | — | Indiana |
| 45 | Lowell Patton | 5 | son | — | Indiana |
| 46 | Coleene Patton | 3 | daughter | — | Indiana |
| 47 | Wanda Patton | 1 | daughter | — | Indiana |
| 48 | Roscoe Hays | 46 | head | Farmer | Indiana |
| 49 | Woodrow Hays | 18 | son | Sec C | Indiana |
| 50 | Alvin Hays | 16 | son | New Worker | Indiana |
| 51 | Betty Hays | 13 | daughter | — | Indiana |
| 52 | Mary Ann Hays THIS PERSON | 11 | daughter | — | Indiana |
| 53 | Verla Hays | 8 | daughter | — | Indiana |
| 54 | Lula Hays | 33 | servant | House Keeper | Indiana |
| 55 | Ruth Hays | 13 | daughter | — | Indiana |
| 56 | Otis Mitchell | 39 | head | Farmer | Indiana |
| 57 | Lela Mitchell | 38 | wife | House Keeper | Indiana |
| 58 | Ruth Mitchell | 16 | daughter | New Worker | Indiana |
| 59 | Jerry Jr Mitchell | 8 | son | — | Indiana |
| 60 | Anna Freeman | 48 | head | House Keeper | Indiana |
| 61 | Elsie Wilson | 21 | daughter | Nya | Indiana |
| 62 | John Wilson | 19 | son | Ccc | Indiana |
| 63 | George Wilson | 15 | son | New Worker | Indiana |
| 64 | Flora Chambers | 31 | head | House Keeper | Indiana |
| 65 | Wylie Eads | 55 | head | Laborer | Indiana |
| 66 | Sarah Eads | 52 | wife | House Keeper | Indiana |
| 67 | Zada Allen | 46 | head | House Keeper | Indiana |
| 68 | Ruth Frye | 19 | daughter | — | Indiana |
| 69 | Oneta Frye | 11 | daughter | — | Indiana |
| 70 | Doris Frye | 10 | daughter | — | Indiana |
| 71 | James Roberts | 34 | head | Laborer | Indiana |
| 72 | Susie Roberts | 26 | wife | House Keeper | Indiana |
| 73 | Kenneth Roberts | 7 | son | — | Indiana |
| 74 | Helen Roberts | 5 | daughter | — | Indiana |
| 75 | Eunice Roberts | 3 | daughter | — | Indiana |
| 76 | Lois Roberts | 2 | daughter | — | Indiana |
| 77 | Wilma Roberts | 0 | daughter | — | Indiana |
| 78 | Ed Roberts | 40 | head | Invalid | Indiana |
| 79 | Evelyn Roberts | 40 | wife | House Keeper | Indiana |
| 80 | Leon Roberts | 12 | son | — | Indiana |
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)