MD
Mary Donovan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Donovan across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 11-person household.
Age 10
b. ~1930
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Donovan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1930 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Donovan | Daughter | — | 10 | ~1930 |
| Ann Donovan | Daughter | — | 21 | ~1919 |
| John Donovan | Head | — | 51 | ~1889 |
| James Donovan | Son | — | 15 | ~1925 |
| Thomas Donovan | Son | — | 25 | ~1915 |
| Dennis Donovan | Son | — | 11 | ~1929 |
| Patrick Donovan | Son | — | 20 | ~1920 |
| Andrew Donovan | Son | — | 23 | ~1917 |
| Paul Donovan | Son | — | 13 | ~1927 |
| Gregory Donovan | Son | — | 12 | ~1928 |
| Anna Donovan | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Wayne, Michigan
Daughter, age 1
Wayne, Michigan · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donovan |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Daughter, age 10
Wayne-County, Michigan · implied b. ~1930 — 11 household members
| Surname | Donovan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Income (1939) | 0 |
| Highest Grade | 5 |
| 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 Donovan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donovan
Daughter · 1940 · age 10 · b. ~1930 · Michigan
★ You are viewing this record
Sibling
Patrick Donovan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Donovan
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Donovan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Donovan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Donovan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Donovan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gregory Donovan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew Donovan
Sibling · 1940 · age 23
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-t0627-01876-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Simon | 16 | Daughter | — | West Virginia |
| 2 | Gloria Simon | 13 | Daughter | — | West Virginia |
| 3 | William Simon | 5 | Son | — | West Virginia |
| 4 | Joseph Bahr | 26 | Head | Welder | Missouri |
| 5 | Dorothy Bahr | 26 | Wife | — | Missouri |
| 6 | Shirley Ann Bahr | 4 | Daughter | — | Michigan |
| 7 | Joseph Jr. Bahr | 1 | Son | — | Michigan |
| 8 | Sarah Bourke | 52 | Mother | — | Missouri |
| 9 | John Lonis | 30 | Head | Die Maker | Missouri |
| 10 | Dorothy Lonis | 26 | Wife | — | Missouri |
| 11 | Shirley Ann Lonis | 5 | Daughter | — | Missouri |
| 12 | John A. Donovan | 51 | Head | Electrician | Mass. |
| 13 | Anna Donovan | 52 | Wife | — | Canada |
| 14 | Thomas Donovan | 25 | Son | Electrician | Canada |
| 15 | Andrew Donovan | 23 | Son | Electrician | Canada |
| 16 | Ann Donovan | 21 | Daughter | Trim Maker | Canada |
| 17 | Patrick Donovan | 20 | Son | — | Canada |
| 18 | James Donovan | 15 | Son | — | Canada |
| 19 | Paul Donovan | 13 | Son | — | Michigan |
| 20 | Gregory Donovan | 12 | Son | — | Michigan |
| 21 | Dennis Donovan | 11 | Son | — | Michigan |
| 22 | Mary Donovan THIS PERSON | 10 | Daughter | — | Michigan |
| 23 | William Barr | 47 | Head | Tool And Die Maker | Scotland |
| 24 | Sarah Barr | 47 | Wife | Caretaker | Scotland |
| 25 | Alexander Barr | 19 | Son | Worker | Scotland |
| 26 | James Barr | 16 | Son | Trim Maker | Scotland |
| 27 | Arnold Komar | 24 | Head | Tire Builder | Indiana |
| 28 | Mary Komar | 23 | Wife | — | Indiana |
| 29 | Norman Cameron | 56 | Head | Metal Finisher | Ireland |
| 30 | Rose Cameron | 42 | Wife | — | Ohio |
| 31 | Ronald Larish | 29 | Head | Foreman | Michigan |
| 32 | Catherine Larish | 30 | Wife | — | Pennsylvania |
| 33 | Robert Larish | 1 | Son | — | Michigan |
| 34 | James Mcroberts | 62 | Head | Engineer | West Virginia |
| 35 | Ida Mcroberts | 56 | Wife | — | New York |
| 36 | Priscilla Pluff | 34 | Head | Typist | Michigan |
| 37 | Joseph Deliberto | 26 | Head | Laborer | Missouri |
| 38 | Violet Deliberto | 25 | Wife | — | Michigan |
| 39 | Ervin Scholz | 34 | Head | Beer Garden | Austria |
| 40 | Margaret Scholz | 37 | Wife | — | Switzerland |
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)