MH
Mary Hays — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Iowa
Our Model Tree links this Mary Hays across the 1930 and 1940 US Censuses in Marion-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Iowa |
| Surname | Hays |
| Given Name | Mary Harriet |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Knoxville City |
| 1935 Residence (County) | Marion Co |
| Additional Details | |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Knoxville City |
| Est. Birth Year | ~1921 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bessie Frank | Other | — | 48 | ~1892 |
| Lorick Hays | Son | — | 15 | ~1925 |
| Goodwyn Hays | Spouse | — | 46 | ~1894 |
| Norman Hays | Son | — | 9 | ~1931 |
| Norman Hays | Head | — | 48 | ~1892 |
| Lee Hays | Son | — | 11 | ~1929 |
| Mary Hays | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Marion, Iowa
Daughter, age 9
Marion, Iowa · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hays |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marion-County, Iowa
Daughter, age 19
Marion-County, Iowa · implied b. ~1921 — 7 household members
| Surname | Hays |
| Given Name | Mary Harriet |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Knoxville City |
| 1935 Residence (County) | Marion Co |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 19 · b. ~1921 · Iowa
★ You are viewing this record
Sibling
Lee Hays
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorick Hays
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norman Hays
Sibling · 1940 · age 9
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 — Marion-County, Iowa
Open full size
1940 US Federal Census — Marion-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01181-00199)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gladys Younker | 36 | Wife | Librarian | Iowa |
| 2 | Don Ireland | 29 | Son | Clerk | Iowa |
| 3 | Harriett B. Moore | 25 | Daughter | Stenographer | Iowa |
| 4 | Agnes Lynn Moore | 1 | Gr Daughter | — | Iowa |
| 5 | Clarence Spaur | 49 | Head | Stock Buyer | Iowa |
| 6 | Eva Spaur | 49 | Wife | — | Iowa |
| 7 | Rita R. Spaur | 19 | Son | Clerk | Iowa |
| 8 | Dan Fast | 24 | Lodger | Welder | Iowa |
| 9 | T. J. Benbow | 68 | Head | Miner | Iowa |
| 10 | Edna A. Benbow | 40 | Wife | — | Kansas |
| 11 | Marion M. Pigg | 47 | Head | Minister | Nebraska |
| 12 | Katherine Pigg | 43 | Wife | — | Missouri |
| 13 | Marion Jr. Pigg | 18 | Son | — | Nebraska |
| 14 | Elizabeth Sherwood | 60 | Head | — | Iowa |
| 15 | Alma Chamberlin | 48 | Lodger | — | Iowa |
| 16 | Mike Cillo | 20 | Lodger | — | Iowa |
| 17 | Norman Riley Hays | 48 | Head | Attorney At Law | Iowa |
| 18 | Goodwyn Hays | 46 | Wife | — | Iowa |
| 19 | Mary Harriet Hays THIS PERSON | 19 | Daughter | — | Iowa |
| 20 | Lorick N. Hays | 15 | Son | — | Iowa |
| 21 | Lee M. Hays | 11 | Son | — | Iowa |
| 22 | Norman Jr. Hays | 9 | Son | — | Iowa |
| 23 | Bessie Frank | 48 | Maid | Maid | Iowa |
| 24 | Blanche S. Mctaggart | 61 | Head | — | Iowa |
| 25 | Catherine Mctaggart | 52 | Sister | — | Iowa |
| 26 | Joe Work | 72 | Head | Retired Farmer | Ohio |
| 27 | Ad Mond Wilson | 35 | Head | Route Manager | Iowa |
| 28 | Dorothy Wilson | 34 | Wife | — | Iowa |
| 29 | Everett Wilson | 13 | Son | — | Iowa |
| 30 | Marjorie Wilson | 11 | Daughter | — | Iowa |
| 31 | Christie C. Wilson | 69 | Father | — | Nebraska |
| 32 | Essie Wilson | 57 | Mother | — | Iowa |
| 33 | Jules Goutte | 31 | Head | Laborer | Iowa |
| 34 | Mae Goutte | 24 | Wife | — | Iowa |
| 35 | Jackie M. Jean Goutte | 6 | Step Son | — | Missouri |
| 36 | Marvin L. Goutte | 2 | Son | — | Iowa |
| 37 | Glover Dave Goutte | 28 | Brother-in-law | Farmer | Iowa |
| 38 | Myrtle Powers | 68 | Head | — | Missouri |
| 39 | Berniece Shires | 46 | Daughter | Saleslady | Iowa |
| 40 | Leigh Milligan | 49 | Lodger | Manager | California |
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)