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Mary Mcdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Mcdonald across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Barbara Mcdonald | Daughter | — | 8 | ~1932 |
| Rita Mcdonald | Daughter | — | 10 | ~1930 |
| Mary Mcdonald | Daughter | — | 11 | ~1929 |
| Mary Mcdonald | Daughter | — | 14 | ~1926 |
| Eloise Mcdonald | Daughter | — | ~1940 | |
| Wilford Mcdonald | Head | — | 41 | ~1899 |
| John Mcdonald | Son | — | 13 | ~1927 |
| Appolonia Mcdonald | Son | — | 6 | ~1934 |
| Mildred Mcdonald | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Wayne, Michigan
Daughter, age 3
Wayne, Michigan · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDonald |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Daughter, age 14
Wayne-County, Michigan · implied b. ~1926 — 9 household members
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Mcdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcdonald
Daughter · 1940 · age 14 · b. ~1926 · Michigan
★ You are viewing this record
Sibling
Barbara Mcdonald
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcdonald
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcdonald
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Appolonia Mcdonald
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mcdonald
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eloise Mcdonald
Sibling · 1940 · age
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 — 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-t0627-01843-00909)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michel Shalanay | 52 | Head | Press Operator | Yugoslavia |
| 2 | Catherine Shalanay | 47 | Wife | — | Yugoslavia |
| 3 | Carl Shalanay | 16 | Son | — | Michigan |
| 4 | Ivan Jankilovich | 52 | Lodger | Die Maker | Yugoslavia |
| 5 | Wilford Mcdonald | 41 | Head | Grinder | Canada English |
| 6 | Mildred Mcdonald | 37 | Wife | — | Canada English |
| 7 | Mary Mcdonald THIS PERSON | 14 | Daughter | — | Michigan |
| 8 | John Mcdonald | 13 | Son | — | Michigan |
| 9 | Mary H. Mcdonald | 11 | Daughter | — | Michigan |
| 10 | Rita Mcdonald | 10 | Daughter | — | Michigan |
| 11 | Barbara Mcdonald | 8 | Daughter | — | Michigan |
| 12 | Appolonia Mcdonald | 6 | Son | — | Michigan |
| 13 | Eloise Mcdonald | 0 | Daughter | — | Michigan |
| 14 | Isadore Rosenberg | 54 | Head | Junk Man | Russia |
| 15 | Mollie Rosenberg | 50 | Wife | — | Russia |
| 16 | Harry Rosenblatt | 31 | Head | Grocery Clerk | Michigan |
| 17 | Sarah Rosenblatt | 27 | Wife | — | Michigan |
| 18 | Allen Rosenblatt | 21 | Son | — | Michigan |
| 19 | Eva Rosenblatt | 13 | Daughter | — | Michigan |
| 20 | Marilyn Rosenblatt | 3 | Granddaughter | — | Michigan |
| 21 | Esther Gregg | 44 | Head | — | Ireland |
| 22 | Marion Multhut | 34 | Son in law | Dispatcher | Canada English |
| 23 | Margaret Multhut | 30 | Daughter | — | Michigan |
| 24 | James Alejandri | 14 | Lodger | — | Ireland |
| 25 | Louis Kasoff | 60 | Head | Painter | Russia |
| 26 | Rebecca Kasoff | 62 | Wife | — | Russia |
| 27 | Samuel Kasoff | 27 | Son | Painter | Michigan |
| 28 | Harry Kasoff | 25 | Son | New Worker | Michigan |
| 29 | Louis Rozumny | 38 | Head | Machinist | Poland |
| 30 | Rita Rozumny | 38 | Wife | — | Poland |
| 31 | Melvin Rozumny | 11 | Son | — | Michigan |
| 32 | Evelyn Rozumny | 9 | Daughter | — | Michigan |
| 33 | Alta Rozumny | 2 | Son | — | Michigan |
| 34 | Edward Moran | 75 | Head | — | Canada English |
| 35 | Beatrice Moran | 23 | Nephew | Tool Maker | Canada English |
| 36 | James Lafarelle | 70 | Head | Steam Operator | Ireland |
| 37 | James Jr. Lafarelle | 28 | Son | Asst. Operator | Michigan |
| 38 | Agnes Lafarelle | 25 | Daughter in law | — | Michigan |
| 39 | Joan Lafarelle | 7 | Granddaughter | — | Michigan |
| 40 | Barbara Lafarelle | 5 | Granddaughter | — | 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)