MF
Mary Fischer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Fischer across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1906), then head of a 8-person household.
Age 34
b. ~1906
Female
Spouse
Born: Poland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Fischer |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Township / Ward | Detroit |
| Est. Birth Year | ~1906 |
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 |
|---|---|---|---|---|
| John Fischer | Son | — | 12 | ~1928 |
| David Fischer | Son | — | 5 | ~1935 |
| Daniel Fischer | Son | — | 2 | ~1938 |
| Mary Fischer | Spouse | — | 34 | ~1906 |
| Robert Fischer | Son | — | 7 | ~1933 |
| Mary Fischer | Daughter | — | 13 | ~1927 |
| John Fischer | Son | — | 10 | ~1930 |
| John Fischer | Head | — | 43 | ~1897 |
Census Appearances
Spouse, age 23
Wayne, Michigan · implied b. ~1907 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fisher |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1907 |
| Age at First Marriage | 21 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Sorter |
| Industry | Brass Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Wayne-County, Michigan
Spouse, age 34
Wayne-County, Michigan · implied b. ~1906 — 8 household members
| Surname | Fischer |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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 Fischer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fischer
Spouse · 1940 · age 34 · b. ~1906 · Michigan
★ 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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01863-00442)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stanley Geriwa | 26 | son | Laborer | Michigan |
| 2 | Raymond Geriwa | 24 | son | Laborer | Michigan |
| 3 | Francis Geriwa | 22 | daughter | Laborer | Michigan |
| 4 | Casimer Geriwa | 18 | son | — | Michigan |
| 5 | Nettie Geriwa | 15 | daughter | Laundress | Michigan |
| 6 | John Mager | 59 | Head | — | Poland |
| 7 | Anna Mager | 53 | wife | — | Poland |
| 8 | Angeline Mager | 26 | daughter | Laborer | Michigan |
| 9 | Bernice Mager | 24 | daughter | Packer | Michigan |
| 10 | Edward W. Mager | 21 | son | Asst. Instructor | Michigan |
| 11 | Walter Mager | 16 | son | — | Michigan |
| 12 | Eugene Potter | 31 | Head | Truck Driver | Michigan |
| 13 | Helen Potter | 28 | wife | — | Michigan |
| 14 | Eugene Jr. Potter | 10 | son | — | Michigan |
| 15 | Frank Callich | 33 | brother-in-law | Truck Driver | Michigan |
| 16 | Walter Callich | 26 | brother-in-law | Foreman | Michigan |
| 17 | Victor J. Dulewicz | 44 | Head | Mach. Operator | Poland |
| 18 | Celia Dulewicz | 35 | wife | — | New York |
| 19 | Victor J. Jr. Dulewicz | 14 | son | — | Michigan |
| 20 | George Rychlinski | 57 | Lodger | Laborer | Poland |
| 21 | John D. Fischer | 43 | Head | Press Operator | W. Virginia |
| 22 | Mary Fischer THIS PERSON | 34 | wife | — | Poland |
| 23 | Mary C. Fischer | 13 | daughter | — | W. Virginia |
| 24 | John Fischer | 12 | son | — | Michigan |
| 25 | John Jr. Fischer | 10 | son | — | Michigan |
| 26 | Robert Fischer | 7 | son | — | Michigan |
| 27 | David Fischer | 5 | son | — | Michigan |
| 28 | Daniel Fischer | 2 | son | — | Michigan |
| 29 | Barney Lewandowski | 42 | Head | Tool Grinder | Pennsylvania |
| 30 | Sarah Lewandowski | 32 | wife | Maid | Michigan |
| 31 | Edward Lewandowski | 11 | son | — | Michigan |
| 32 | Geraldine Lewandowski | 9 | daughter | — | Michigan |
| 33 | Anne Lewandowski | 72 | Mother | — | Poland |
| 34 | Mary Kozdrun | 67 | Lodger | — | Poland |
| 35 | John Mohn | 44 | Head | Laborer | Michigan |
| 36 | Eva Mohn | 39 | wife | — | Hungary |
| 37 | Anthony Mohn | 17 | son | Newsboy | Michigan |
| 38 | Joseph Mohn | 15 | son | Newsboy | Michigan |
| 39 | James Mohn | 11 | son | — | Michigan |
| 40 | Catherine Mohn | 9 | daughter | — | Michigan |
Related Census Records
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)