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Mary Mcelroy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Mcelroy across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 6-person household.
Age 39
b. ~1901
Female
Spouse
Born: Vermont
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | McElroy |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Dearborn city |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
| Township / Ward | Dearborn City |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Francis Mcelroy | Son | — | 9 | ~1931 |
| Mary Mcelroy | Spouse | — | 39 | ~1901 |
| Patrick Mcelroy | Son | — | 2 | ~1938 |
| Joseph Mcelroy | Head | — | 42 | ~1898 |
| Arnold Mcelroy | Daughter | — | 13 | ~1927 |
| James Mcelroy | Son | — | 12 | ~1928 |
Census Appearances
1930
Wayne, Michigan
Other, age 29
Wayne, Michigan · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | Mary E. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Vermont |
| Age at First Marriage | 25 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Vermont |
| Can Read/Write | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1940
Wayne-County, Michigan
Spouse, age 39
Wayne-County, Michigan · implied b. ~1901 — 6 household members
| Surname | McElroy |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Dearborn city |
| 1935 Residence (County) | Wayne |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
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 Mcelroy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mcelroy
Spouse · 1940 · age 39 · b. ~1901 · 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
39 people indexed on this census page (nara:1940:m-t0627-01826-00264)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Addie Mack | 43 | Wife | — | Michigan |
| 42 | William Mack | 20 | Son | Tool Maker | Michigan |
| 43 | Robert Mack | 19 | Son | File Clerk | Michigan |
| 44 | Betty J. Mack | 13 | Daughter | — | Michigan |
| 45 | Victoria Buryznski | 45 | Head | — | Poland |
| 46 | Charles E. Giller | 35 | Head | Milk Salesman | Canada-Eng |
| 47 | Cecelia Giller | 37 | Wife | — | Canada-Eng |
| 48 | Ray Giller | 14 | Daughter | — | Michigan |
| 50 | Walter R. Hines | 44 | Head | Machinist | Michigan |
| 51 | Adeline Hines | 44 | Wife | — | Indiana |
| 52 | Albert B. Coomer | 35 | Head | Tool Maker | Indiana |
| 53 | Delma Coomer | 33 | Wife | — | Indiana |
| 54 | Shirley Coomer | 9 | Daughter | — | Michigan |
| 55 | Oliver Lombardi | 32 | Head | Laborer | Pennsylvania |
| 56 | Grace Lombardi | 29 | Wife | Clerical | Minnesota |
| 57 | Clifford Fjernlund | 24 | Law | Draftsman | Minnesota |
| 58 | Theodore G. Tripp | 37 | Head | Oil Maker | Illinois |
| 59 | Lucinda Tripp | 37 | Wife | — | Ohio |
| 60 | Joseph A. Mcelroy | 42 | Head | Die Maker | Vermont |
| 61 | Mary J. Mcelroy THIS PERSON | 39 | Wife | — | Vermont |
| 62 | Arnold Mcelroy | 13 | Daughter | — | Michigan |
| 63 | James Mcelroy | 12 | Son | — | Michigan |
| 64 | Francis Mcelroy | 9 | Son | — | Michigan |
| 65 | Patrick Mcelroy | 2 | Son | — | Michigan |
| 66 | Alvin R. Brooks | 38 | Head | Stereo Typer | New Hampshire |
| 67 | Rose Brooks | 44 | Wife | — | Massachusetts |
| 68 | Robert Brooks | 13 | Son | — | Michigan |
| 69 | Betty A. Brooks | 11 | Daughter | — | Michigan |
| 70 | Dick M. Brooks | 9 | Daughter | — | Michigan |
| 71 | Herbert Richardson | 46 | Head | Foreman | Canada-Eng |
| 72 | Leona Richardson | 44 | Wife | — | Canada-Eng |
| 73 | Shirley Richardson | 13 | Daughter | — | Michigan |
| 74 | Kelly Powell | 39 | Head | Laborer | Michigan |
| 75 | Frankie Powell | 36 | Wife | — | Michigan |
| 76 | Bonnie Powell | 11 | Daughter | — | Michigan |
| 77 | Roger Powell | 10 | Son | — | Michigan |
| 78 | Nick Dragoscu | 47 | Head | Laborer | Rumania |
| 79 | Pauline Dragoscu | 40 | Wife | — | Yugoslavia |
| 80 | Vera M. Dragoscu | 16 | Daughter | — | 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)