MH
Mary Haas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cass-County, Michigan
Our Model Tree links this Mary Haas across the 1930 and 1940 US Censuses in Cass-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Michigan |
| Surname | Haas |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Volinia tp. |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Volinia Tp |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Nora Haas | Spouse | — | 36 | ~1904 |
| Wayne Haas | Son | — | 17 | ~1923 |
| Alice Haas | Daughter | — | 14 | ~1926 |
| James Haas | Son | — | 2 | ~1938 |
| Mary Haas | Daughter | — | 11 | ~1929 |
| Stanley Haas | Head | — | 37 | ~1903 |
| Mark Haas | Son | — | 9 | ~1931 |
Census Appearances
1930
Kalamazoo, Michigan
Daughter, age 1
Kalamazoo, Michigan · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Haas |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Cass-County, Michigan
Daughter, age 11
Cass-County, Michigan · implied b. ~1929 — 7 household members
| Surname | Haas |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Volinia tp. |
| 1935 Residence (County) | Cass |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Haas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Haas
Daughter · 1940 · age 11 · b. ~1929 · Michigan
★ You are viewing this record
Sibling
James Haas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mark Haas
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Haas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Haas
Sibling · 1940 · age 14
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 — Cass-County, Michigan
Open full size
1940 US Federal Census — Cass-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01738-00612)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hattie Bredenburg | 66 | Housekeeper | Housekeeper | Michigan |
| 2 | Irene Lokerie | 74 | Hired | Laborer | Michigan |
| 3 | Norman O. Root | 31 | Head | Farmer | Michigan |
| 4 | Irene Root | 24 | Wife | — | Michigan |
| 5 | Art Root | 6 | Son | — | Michigan |
| 6 | Norma Root | 3 | Daughter | — | Michigan |
| 7 | John Walden | 76 | Head | Farmer | Michigan |
| 8 | Bertha Walden | 54 | Wife | — | Michigan |
| 9 | Vera Jane Graham | 58 | Head | — | Michigan |
| 10 | Joseph Graham | 58 | Husband | Farmer | Michigan |
| 11 | Floyd A. Brown | 51 | Head | Farmer | Michigan |
| 12 | Lydia Brown | 43 | Wife | — | Michigan |
| 13 | Valorus P. Brown | 50 | Head | Farmer | Michigan |
| 14 | Elsie Brown | 50 | Wife | — | Michigan |
| 15 | Earnest Peter | 46 | Head | Farmer | Michigan |
| 16 | Stella Peter | 46 | Wife | — | Michigan |
| 17 | Lyndon Peter | 23 | Son | Laborer | Michigan |
| 18 | Ira G. Ralvin | 55 | Head | Farmer | Michigan |
| 19 | Elsie Ralvin | 59 | Wife | — | Michigan |
| 20 | Peter P. Trojan | 50 | Head | Farmer | Poland |
| 21 | Anna Trojan | 48 | Wife | — | Hungary |
| 22 | Fred Riley | 59 | Head | Farmer | Michigan |
| 23 | Eva S. Riley | 38 | Wife | — | Michigan |
| 24 | Stanley Haas | 37 | Head | Manager | Michigan |
| 25 | Nora Haas | 36 | Wife | — | Michigan |
| 26 | Wayne Haas | 17 | Son | — | Michigan |
| 27 | Alice Haas | 14 | Daughter | — | Michigan |
| 28 | Mary Helen Haas THIS PERSON | 11 | Daughter | — | Michigan |
| 29 | Mark Haas | 9 | Son | — | Michigan |
| 30 | James Haas | 2 | Son | — | Michigan |
| 31 | George Mosher | 57 | Head | Farmer | Michigan |
| 32 | Mildred O. Mosher | 52 | Wife | — | Michigan |
| 33 | Eugene Mosher | 84 | Father | — | Michigan |
| 34 | Albert Yazway | 53 | Hired Hand | Worked For Board | Michigan |
| 35 | Roger Gardner | 20 | Head | Manager Of Store | Michigan |
| 36 | Joan O. Gardner | 20 | Wife | Manager Of Store | Michigan |
| 37 | William Slovari | 53 | Head | Laborer | Michigan |
| 38 | Verna Slovari | 56 | Wife | — | Michigan |
| 39 | Maynard Slovari | 31 | Son | Laborer | Michigan |
| 40 | Alvah Veland | 57 | Head | Day Laborer | Michigan |
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)