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Mary Mcelroy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Pennsylvania
Our Model Tree links this Mary Mcelroy across the 1930 and 1940 US Censuses in Washington-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 7-person household.
Age 44
b. ~1896
Female
Spouse
Born: West Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Pennsylvania |
| Surname | McElroy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Fallowfield Twp. |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
| Township / Ward | Fallowfield Twp |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcelroy | Spouse | — | 44 | ~1896 |
| Frank Mcelroy | Head | — | 46 | ~1894 |
| Frank Mcelroy | Son | — | 10 | ~1930 |
| Kathleen Mcelroy | Daughter | — | 7 | ~1933 |
| Marian Mcelroy | Daughter | — | 14 | ~1926 |
| Robert Mcelroy | Son | — | 8 | ~1932 |
| Eleanor Mcelroy | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Washington, Pennsylvania
Spouse, age 36
Washington, Pennsylvania · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | West Virginia |
| Age at First Marriage | 24 |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | West Virginia |
| Can Read/Write | Yes |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
1940
Washington-County, Pennsylvania
Spouse, age 44
Washington-County, Pennsylvania · implied b. ~1896 — 7 household members
| Surname | McElroy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Fallowfield Twp. |
| 1935 Residence (County) | Washington |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
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 44 · b. ~1896 · Pennsylvania
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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 — Washington-County, Pennsylvania
Open full size
1940 US Federal Census — Washington-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03623-00512)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dorothy Calvert | 10 | Daughter | — | Pennsylvania |
| 2 | Ruth Calvert | 3 | Daughter | — | Pennsylvania |
| 3 | Marie Calvert | 0 | Daughter | — | Pennsylvania |
| 4 | Minnie Calvert | 55 | Mother | — | Pennsylvania |
| 5 | Frank Mcelroy | 46 | Head | Supervisor | Ohio |
| 6 | Mary Mcelroy THIS PERSON | 44 | Wife | — | West Virginia |
| 7 | Marian Mcelroy | 14 | Daughter | — | Pennsylvania |
| 8 | Eleanor Mcelroy | 12 | Daughter | — | Pennsylvania |
| 9 | Frank Jr. Mcelroy | 10 | Son | — | Pennsylvania |
| 10 | Robert Mcelroy | 8 | Son | — | Pennsylvania |
| 11 | Kathleen Mcelroy | 7 | Daughter | — | Pennsylvania |
| 12 | Hiram Bane | 46 | Head | Carpenter | Pennsylvania |
| 13 | Ruth Bane | 42 | Wife | — | Pennsylvania |
| 14 | Robert Bane | 18 | Son | — | Pennsylvania |
| 15 | Henry C. Watterson | 41 | Head | Engineer | Pennsylvania |
| 16 | F. Helen Watterson | 39 | Wife | — | Pennsylvania |
| 17 | Howard Watterson | 14 | Son | — | Pennsylvania |
| 18 | Grant Watterson | 7 | Son | — | Pennsylvania |
| 19 | William C. Gottheld | 58 | Head | Proprietor | Pennsylvania |
| 20 | Sarah Gottheld | 56 | Wife | — | Pennsylvania |
| 21 | Harold Gottheld | 21 | Son | — | Pennsylvania |
| 22 | Ruth Gottheld | 15 | Daughter | — | Pennsylvania |
| 23 | Charles R. Harris | 54 | Head | Carpenter | Pennsylvania |
| 24 | Lydia C. Harris | 57 | Wife | — | Pennsylvania |
| 25 | Ernest M. Harris | 30 | Son | Salesman | Pennsylvania |
| 26 | James Tumpane | 47 | Head | Salesman | Massachusetts |
| 27 | Jan Tumpane | 44 | Wife | — | Pennsylvania |
| 28 | James Jr. Tumpane | 21 | Son | — | Washington D.C. |
| 29 | Ann Tumpane | 20 | Daughter | — | Massachusetts |
| 30 | John Tumpane | 17 | Son | — | Massachusetts |
| 31 | Rachael Tumpane | 14 | Daughter | — | Pennsylvania |
| 32 | Mary Jean Tumpane | 5 | Daughter | — | Pennsylvania |
| 33 | Theodore H. Sloan | 49 | Head | Engineer | New Jersey |
| 34 | Leanna Sloan | 42 | Wife | — | Pennsylvania |
| 35 | Anna Jane Sloan | 18 | Daughter | — | Pennsylvania |
| 36 | James H. Adamson | 34 | Head | Teacher | Pennsylvania |
| 37 | Dorothy Adamson | 32 | Wife | — | Pennsylvania |
| 38 | James Jr. Adamson | 4 | Son | — | Pennsylvania |
| 39 | Joseph P. Morrison | 29 | Head | Physicist | Pennsylvania |
| 40 | Agnes Morrison | 25 | Wife | — | Pennsylvania |
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)