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Mary Mccarthy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, Ohio
Our Model Tree links this Mary Mccarthy across the 1930 and 1940 US Censuses in Union-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, Ohio |
| Surname | McCarthy |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Union |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Union Township |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| Doris Mccarthy | Daughter | — | 10 | ~1930 |
| Mary Mccarthy | Daughter | — | 13 | ~1927 |
| Betty Mccarthy | Daughter | — | 12 | ~1928 |
| Arleta Mccarthy | Daughter | — | 8 | ~1932 |
| Ray Mccarthy | Head | — | 36 | ~1904 |
| Ray Mccarthy | Son | — | 2 | ~1938 |
| Carl Mccarthy | Son | — | 16 | ~1924 |
| Glenn Mccarthy | Son | — | 5 | ~1935 |
| Nellie Mccarthy | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Union, Ohio
Daughter, age 3
Union, Ohio · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarty |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Union-County, Ohio
Daughter, age 13
Union-County, Ohio · implied b. ~1927 — 9 household members
| Surname | McCarthy |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Union |
| Highest Grade | 8 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Mccarthy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mccarthy
Daughter · 1940 · age 13 · b. ~1927 · Ohio
★ You are viewing this record
Sibling
Doris Mccarthy
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Mccarthy
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Mccarthy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arleta Mccarthy
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Mccarthy
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenn Mccarthy
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 — Union-County, Ohio
Open full size
1940 US Federal Census — Union-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03162-00511)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George A. Scott | 72 | Head | — | Ohio |
| 42 | Ross L. Baker | 50 | Head | Salesman | Ohio |
| 43 | Carrie B. Baker | 50 | Wife | Stenographer | Ohio |
| 44 | Eugene Baker | 25 | Son | Farm Labor | Ohio |
| 45 | Roger Baker | 16 | Son | Labor | Ohio |
| 46 | Margery Baker | 14 | Daughter | — | Ohio |
| 47 | Albert T. Smith | 58 | Head | Teacher | Ohio |
| 48 | Mary M. Smith | 42 | Wife | — | Ohio |
| 49 | Albert T. Smith | 21 | Son | Driver | Ohio |
| 50 | Carol C. Smith | 19 | Daughter | — | Ohio |
| 51 | Mabel M. Smith | 17 | Daughter | — | Ohio |
| 52 | Lowell Hammond | 32 | Head | Owner | Kentucky |
| 53 | Lucile G. Hammond | 23 | Wife | — | Kentucky |
| 54 | Paula J. Hammond | 1 | Daughter | — | Kentucky |
| 55 | William Hammond | 55 | Father | Laborer | Kentucky |
| 56 | Jane Hammond | 62 | Mother | — | Kentucky |
| 57 | Lewis R. Baldwin | 56 | Head | Owner | Ohio |
| 58 | John J. Bishop | 56 | Head | Owner | Ohio |
| 59 | Irma L. Bishop | 56 | Wife | — | Ohio |
| 60 | Elford W. Davis | 50 | Head | Owner | Kentucky |
| 61 | Jessie M. Davis | 47 | Wife | — | Kentucky |
| 62 | Clora B. Davis | 23 | Daughter | Housework | Kentucky |
| 63 | Charles P. Moran | 72 | Head | Owner | Ohio |
| 64 | Grace M. Moran | 46 | Wife | — | Ohio |
| 65 | Grace L. Moran | 17 | Daughter | — | Ohio |
| 66 | Charlene Moran | 7 | Daughter | — | Ohio |
| 67 | Ray S. Mccarthy | 36 | Head | Laborer | Ohio |
| 68 | Nellie M. Mccarthy | 35 | Wife | — | Ohio |
| 69 | Carl P. Mccarthy | 16 | Son | — | Ohio |
| 70 | Mary E. Mccarthy THIS PERSON | 13 | Daughter | — | Ohio |
| 71 | Betty J. Mccarthy | 12 | Daughter | — | Ohio |
| 72 | Doris M. Mccarthy | 10 | Daughter | — | Ohio |
| 73 | Arleta F. Mccarthy | 8 | Daughter | — | Ohio |
| 74 | Glenn E. Mccarthy | 5 | Son | — | Ohio |
| 75 | Ray Jr. Mccarthy | 2 | Son | — | Ohio |
| 76 | Blanch Woodworth | 56 | Head | Farm Owner | Ohio |
| 77 | Blanch Woodworth | 56 | Wife | — | Ohio |
| 78 | Leslie A. Frick | 27 | Head | Laborer | Ohio |
| 79 | Wilma E. Frick | 20 | Wife | — | West Virginia |
| 80 | James L. Frick | 2 | Son | — | Ohio |
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)