MW
Mary Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sanilac-County, Michigan
Our Model Tree links this Mary Wolf across the 1920, 1930 and 1940 US Censuses in Sanilac-County, Michigan (XGBoost, ~Confirmed), with identified parents Sara & Henry — first a daughter (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sanilac-County, Michigan |
| Surname | Wolf |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Speaker Twp |
| 1935 Residence (County) | Sanilac |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Speaker Twp |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Sophia Wolf | Daughter | — | 25 | ~1915 |
| Mary Wolf | Daughter | — | 23 | ~1917 |
| Henry Wolf | Head | — | 51 | ~1889 |
| Harry Wolf | Son | — | 13 | ~1927 |
| Henry Wolf | Son | — | 21 | ~1919 |
| Dorothy Wolf | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Sanilac, Michigan
Daughter, age 3
Sanilac, Michigan · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sanilac, Michigan
Daughter, age 13
Sanilac, Michigan · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sanilac-County, Michigan
Daughter, age 23
Sanilac-County, Michigan · implied b. ~1917 — 6 household members
| Surname | Wolf |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Speaker Twp |
| 1935 Residence (County) | Sanilac |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Sara Wolf (~0.92 confidence) and father Henry Wolf (~0.92 confidence) and mother Dorothy Wolf (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Sara Wolf
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
Henry Wolf
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Dorothy Wolf
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Wolf
Daughter · 1940 · age 23 · b. ~1917 · Michigan
★ You are viewing this record
Sibling
Sophia Wolf
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Wolf
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Wolf
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 — Sanilac-County, Michigan
Open full size
1940 US Federal Census — Sanilac-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01818-00760)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph O'Malley | 35 | Son | Farmer | Michigan |
| 2 | Genevieve O'Malley | 25 | Daughter in law | — | Michigan |
| 3 | John O'Malley | 7 | Grandson | — | Michigan |
| 4 | Katherine O'Malley | 5 | Granddaughter | — | Michigan |
| 5 | Charles E. O'Malley | 4 | Grandson | — | Michigan |
| 6 | Mary O'Malley | 2 | Granddaughter | — | Michigan |
| 7 | Dorothy O'Malley | 1 | Granddaughter | — | Michigan |
| 8 | James Regan | 65 | Head | Farmer | Michigan |
| 9 | Mary Regan | 62 | Wife | — | Michigan |
| 10 | Basil Grimes | 34 | Head | Trucker | Michigan |
| 11 | Margaret Grimes | 32 | Wife | — | Michigan |
| 12 | Irva Grimes | 11 | Daughter | — | Michigan |
| 13 | Norma Grimes | 8 | Daughter | — | Michigan |
| 14 | Janice Grimes | 0 | Daughter | — | Michigan |
| 15 | Henry Q. Wolf | 51 | Head | Farmer | Russia |
| 16 | Dorothy Wolf | 51 | Wife | — | Russia |
| 17 | Sophia Wolf | 25 | Daughter | Bench Work | Illinois |
| 18 | Mary Wolf THIS PERSON | 23 | Daughter | — | Illinois |
| 19 | Henry Wolf | 21 | Son | Farmer | Illinois |
| 20 | Harry Wolf | 13 | Son | — | Michigan |
| 21 | James D. Robbins | 44 | Head | Farmer | Michigan |
| 22 | Blanche Robbins | 34 | Wife | — | Michigan |
| 23 | Olin Robbins | 17 | Son | — | Michigan |
| 24 | Edith Robbins | 10 | Daughter | — | Michigan |
| 25 | Mildred Robbins | 7 | Daughter | — | Michigan |
| 26 | Lily Robbins | 4 | Daughter | — | Michigan |
| 27 | Arthur Jr. Ross | 28 | Head | Farmer | Michigan |
| 28 | Beneda Ross | 20 | Wife | — | Michigan |
| 29 | Eva Ross | 1 | Daughter | — | Michigan |
| 30 | Arthur Ross | 56 | Head | Farmer | Michigan |
| 31 | Lloyd Ross | 17 | Son | Farmer | Michigan |
| 32 | Maxine Ross | 15 | Daughter | — | Michigan |
| 33 | Fred Demaray | 61 | Head | Farmer | Michigan |
| 34 | Alice Demaray | 55 | Wife | — | Michigan |
| 35 | William Demaray | 21 | Son | — | Michigan |
| 36 | Gary Demaray | 2 | Grandson | — | Michigan |
| 37 | William Demaray | 26 | Head | Farmer | Michigan |
| 38 | Ethel Demaray | 25 | Wife | — | Michigan |
| 39 | Lawrence Hazelman | 46 | Head | Farmer | Ohio |
| 40 | Elizabeth Hazelman | 52 | Wife | — | Ohio |
Related Census Records
Pedigree Summary
Mary + 3 siblings
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)