MD
Mary Dwyer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Dwyer across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Dwyer |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | new worker |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | New Worker |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1921 |
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 Dwyer | Son | — | 6 | ~1934 |
| Edward Dwyer | Son | — | 5 | ~1935 |
| James Dwyer | Son | — | 17 | ~1923 |
| William Dwyer | Son | — | 15 | ~1925 |
| Elizabeth Dwyer | Daughter | — | 13 | ~1927 |
| Mary Dwyer | Daughter | — | 19 | ~1921 |
| Anna Dwyer | Spouse | — | 38 | ~1902 |
| Richard Dwyer | Son | — | 9 | ~1931 |
Census Appearances
1930
Wayne, Michigan
Daughter, age 8
Wayne, Michigan · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Daughter, age 19
Wayne-County, Michigan · implied b. ~1921 — 8 household members
| Surname | Dwyer |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Occupation | new worker |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 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 Dwyer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dwyer
Daughter · 1940 · age 19 · b. ~1921 · Michigan
★ You are viewing this record
Sibling
James Dwyer
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Dwyer
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Dwyer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Dwyer
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Dwyer
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Dwyer
Sibling · 1940 · age 5
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
39 people indexed on this census page (nara:1940:m-t0627-01887-00485)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Dwyer | 38 | wife | — | Michigan |
| 2 | Mary Dwyer THIS PERSON | 19 | daughter | New Worker | Michigan |
| 3 | James Dwyer | 17 | son | — | Michigan |
| 4 | William Dwyer | 15 | son | — | Michigan |
| 5 | Elizabeth Dwyer | 13 | daughter | — | Michigan |
| 6 | Richard Dwyer | 9 | son | — | Michigan |
| 7 | John Dwyer | 6 | son | — | Michigan |
| 8 | Edward M. Dwyer | 5 | son | — | Michigan |
| 9 | Xavier Pratt | 40 | head | Rubber Mfg. | Belgium |
| 10 | Julia Pratt | 35 | wife | — | Belgium |
| 11 | Victorine Pratt | 5 | daughter | — | Michigan |
| 12 | Emmett Dostin | 33 | head | Repairman | Michigan |
| 13 | Merle Dostin | 31 | wife | Tess | Michigan |
| 14 | Sydney Janes | 38 | head | Plasterer | England |
| 15 | Madge Janes | 33 | wife | — | Michigan |
| 16 | Marjorie Janes | 14 | daughter | — | Michigan |
| 17 | Eziel Marshall | 32 | head | Gas Welder | Michigan |
| 18 | Frances Marshall | 34 | wife | — | Michigan |
| 19 | Royal Marshall | 11 | son | — | Michigan |
| 20 | Thomas Marshall | 7 | son | — | Michigan |
| 21 | Edna Sylvester | 42 | head | Janitress | Michigan |
| 22 | Clarence Sylvester | 21 | son | Bottler | Michigan |
| 23 | Evelyn Sylvester | 26 | daughter | Waitress | Michigan |
| 24 | George Parent | 54 | head | Laborer | Michigan |
| 25 | Gail Parent | 23 | wife | — | Michigan |
| 26 | G. William Parent | 1 | son | — | Michigan |
| 27 | Irene Nolan | 49 | mother in law | — | Michigan |
| 28 | Charles E. Davis | 57 | head | Pressman | New York |
| 29 | Olive Davis | 38 | wife | — | Michigan |
| 30 | Warren E. Davis | 15 | son | — | Michigan |
| 31 | Charla Davis | 7 | daughter | — | Michigan |
| 32 | Hans Spitzbarth | 41 | head | Toolmaker | Germany |
| 33 | Elsa Spitzbarth | 38 | wife | — | Germany |
| 34 | Arthur Spitzbarth | 20 | son | Air Conditioning Apprentice | Germany |
| 35 | Margaret Spitzbarth | 19 | daughter | — | Germany |
| 36 | Anita Spitzbarth | 11 | daughter | — | Michigan |
| 37 | Harry H. Maxwell | 48 | head | Carburetor Inspector | Canada |
| 38 | Clara Maxwell | 41 | wife | — | Canada |
| 39 | Harold Maxwell | 14 | son | — | Canada |
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)