MH
Mary Hayes — 1940 US Census Record
Model Tree available1940 United States Federal Census · Walworth-County, Wisconsin
Our Model Tree links this Mary Hayes across the 1920, 1930 and 1940 US Censuses in Walworth-County, Wisconsin (XGBoost, ~Confirmed), with identified parents George & George — first a daughter (b.~1914), then head of a 2-person household.
Age 26
b. ~1914
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Walworth-County, Wisconsin |
| Surname | Hayes |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sauk |
| Additional Details | |
| Highest Grade | H4 |
| 1935 Residence | Wisconsin |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Elkhorn |
| Est. Birth Year | ~1914 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hayes | Daughter | — | 26 | ~1914 |
| Marie Hayes | Head | — | 56 | ~1884 |
Census Appearances
1920
Walworth, Wisconsin
Daughter, age 6
Walworth, Wisconsin · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Switzerland |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Walworth, Wisconsin
Daughter, age 16
Walworth, Wisconsin · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Switzerland |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Walworth-County, Wisconsin
Daughter, age 26
Walworth-County, Wisconsin · implied b. ~1914 — 2 household members
| Surname | Hayes |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sauk |
| Highest Grade | H4 |
| 1935 Residence | Wisconsin |
| 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 Hayes across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Hayes (~0.92 confidence) and father George Hayes (~0.92 confidence) and mother Marie Hayes (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Hayes
b. ~1843
Source father
● Household
· direct · ~0.92
Father
George Hayes
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Marie Hayes
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Hayes
Daughter · 1940 · age 26 · b. ~1914 · Wisconsin
★ 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 — Walworth-County, Wisconsin
Open full size
1940 US Federal Census — Walworth-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04531-00552)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frances Schinke | 27 | Maid | Maid | Wisconsin |
| 42 | Howard W. Keegan | 30 | Head | Truck Driver | Wisconsin |
| 43 | Margaret Keegan | 24 | Wife | Registered Nurse | Illinois |
| 44 | Charles R. Shattery | 49 | Head | Partner Owner | Wisconsin |
| 45 | Winifred Shattery | 39 | Wife | Stenographer | Wisconsin |
| 46 | Erwin Metetspaw | 66 | Head | Common Labor | Wisconsin |
| 47 | Syrena Metetspaw | 62 | Wife | Practical Nurse | Wisconsin |
| 48 | Evelyn Troeger | 32 | Daughter | Cook | Wisconsin |
| 49 | Charles Troeger | 26 | Son-in-law | Cook | Oklahoma |
| 50 | Charlyn Jean Troeger | 2 | Granddaughter | — | Wisconsin |
| 51 | William Apitz | 57 | Head | Gen. Manager | Wisconsin |
| 52 | Minnie W. Apitz | 60 | Wife | — | Iowa |
| 53 | Fred Lasch | 86 | Head | — | Germany |
| 54 | Fred Apitz | 61 | Head | — | Wisconsin |
| 55 | Nora Apitz | 54 | Sister | — | Wisconsin |
| 56 | James M. Marsh | 77 | Head | Physician | New York |
| 57 | Maybell Marsh | 34 | Wife | — | Wisconsin |
| 58 | Jessie Marsh | 28 | Daughter | — | Wisconsin |
| 59 | Martha Jane Marsh | 24 | Daughter | Secretary | Wisconsin |
| 60 | Ruth Halverson | 10 | Granddaughter | — | Wisconsin |
| 61 | Alice G. Morefield | 68 | Head | Ass'T Post Master | Wisconsin |
| 62 | Ada Johnson | 67 | Housekeeper | Housekeeper | New Jersey |
| 63 | Frances Wales | 75 | Aunt | — | Wisconsin |
| 64 | Carroll Campbell | 24 | Head | Attendant | Wisconsin |
| 65 | Esther Campbell | 21 | Wife | — | Wisconsin |
| 66 | Russell Hummel | 30 | Head | Case Worker | Iowa |
| 67 | Eloise Hummel | 31 | Wife | Registered Nurse | Wisconsin |
| 68 | Marie Hayes | 56 | Head | — | Switzerland |
| 69 | Mary Hayes THIS PERSON | 26 | Daughter | — | Illinois |
| 70 | Edward Rosenthal | 48 | Head | Salesman | Wisconsin |
| 71 | Frieda Rosenthal | 49 | Wife | — | Wisconsin |
| 72 | Maude Mackenzie | 63 | Head | — | Wisconsin |
| 73 | C. F. Graft | 77 | Head | — | Wisconsin |
| 74 | Mary Ada Graft | 46 | Wife | — | Mississippi |
| 75 | George Groesbeck | 32 | Head | Proprietor | Wisconsin |
| 76 | Harriet Groesbeck | 32 | Wife | Bookkeeper | Wisconsin |
| 77 | Bertha Lambert | 49 | Head | Cook | Wisconsin |
| 78 | George Lambert | 21 | Son | Pin Setter | Wisconsin |
| 79 | Gladys Fairchild | 19 | Daughter | Trick Press | Wisconsin |
| 80 | Lowell Fairchild | 22 | Son-in-law | Attendant | Wisconsin |
Pedigree Summary
Mary
Gen 1 · 3 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)