MM
Mary Mayer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Mayer across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 6-person household.
Age 44
b. ~1896
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Mayer |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1896 |
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 |
|---|---|---|---|---|
| Margaret Mayer | Daughter | — | 12 | ~1928 |
| Emil Mayer | Head | — | 52 | ~1888 |
| Thomas Mayer | Son | — | 9 | ~1931 |
| Edward Mayer | Son | — | 17 | ~1923 |
| John Mayer | Son | — | 8 | ~1932 |
| Mary Mayer | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Wayne, Michigan
Spouse, age 34
Wayne, Michigan · implied b. ~1896 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | Mary H |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 29 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Wayne-County, Michigan
Spouse, age 44
Wayne-County, Michigan · implied b. ~1896 — 6 household members
| Surname | Mayer |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Mayer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mayer
Spouse · 1940 · age 44 · b. ~1896 · Michigan
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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-t0627-01842-00303)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Barbara Muhlitter | 16 | daughter | — | Michigan |
| 2 | Ruth Gillespie | 21 | maid | Maid | W. Virginia |
| 3 | Daniel Wolf | 44 | head | Attorney | Indiana |
| 4 | Garneta Wolf | 39 | wife | — | Hungary |
| 5 | Eleanor Wolf | 16 | daughter | — | New York |
| 6 | Marvin Wolf | 12 | son | — | New York |
| 7 | Eugene P. Callahan | 48 | head | Sales Supervisor | Indiana |
| 8 | Enid Callahan | 42 | wife | — | Texas |
| 9 | Eugene Callahan | 18 | son | — | Texas |
| 10 | Philip Callahan | 14 | son | — | Georgia |
| 11 | Ann Callahan | 8 | daughter | — | Tennessee |
| 12 | Willie Franklin | 46 | maid | Maid | Arkansas |
| 13 | Daniel Eckhardt | 46 | head | Principal Clerk | Michigan |
| 14 | Martha Eckhardt | 46 | wife | — | Michigan |
| 15 | Theodore Eckhardt | 18 | son | — | Michigan |
| 16 | Marjory Eckhardt | 16 | daughter | — | Michigan |
| 17 | Jean Eckhardt | 15 | daughter | — | Michigan |
| 18 | Doris Eckhardt | 10 | daughter | — | Michigan |
| 19 | Emil Mayer | 52 | head | Physician Surgeon | Illinois |
| 20 | Mary Mayer THIS PERSON | 44 | wife | — | Indiana |
| 21 | Edward Mayer | 17 | son | — | Michigan |
| 22 | Margaret Mayer | 12 | daughter | — | Michigan |
| 23 | Thomas Mayer | 9 | son | — | Michigan |
| 24 | John Mayer | 8 | son | — | Michigan |
| 25 | Stanley Krajinke | 60 | head | Proprietor | Poland |
| 26 | Susan Krajinke | 58 | wife | — | Michigan |
| 27 | Richard Krajinke | 18 | son | — | Michigan |
| 28 | Clarence Krajinke | 31 | son | Gen. Manager | Michigan |
| 29 | Wilma Krajinke | 27 | daughter-in-law | — | Michigan |
| 30 | Francis Krajinke | 3 | grandson | 0 | Michigan |
| 31 | Robert Krajinke | 1 | grandson | 0 | Michigan |
| 32 | Virginia Krajinke | 13 | niece | — | Michigan |
| 33 | Anna Krajinke | 16 | niece | — | Michigan |
| 34 | Royal Mickert | 66 | head | Maid | Missouri |
| 35 | Elsie Mickert | 39 | wife | — | Michigan |
| 36 | Edward G. May | 45 | head | General Manager | Illinois |
| 37 | Christine May | 39 | wife | — | New York |
| 38 | Griffith May | 12 | son | — | Michigan |
| 39 | Phillaire May | 11 | daughter | — | Michigan |
| 40 | Douglas May | 7 | son | — | 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)