MG
Mary Griffin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Mary Griffin across the 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 10-person household.
Age 42
b. ~1898
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Griffin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Hamilton Township |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Hamilton Township |
| Est. Birth Year | ~1898 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Agnes Griffin | Daughter | — | 11 | ~1929 |
| Margaret Griffin | Daughter | — | 13 | ~1927 |
| Agnes Griffin | Daughter | — | 16 | ~1924 |
| Ellen Griffin | Daughter | — | 8 | ~1932 |
| Mary Griffin | Daughter | — | 21 | ~1919 |
| Patrick Griffin | Head | — | 48 | ~1892 |
| Martin Griffin | Son | — | 17 | ~1923 |
| Patrick Griffin | Son | — | 19 | ~1921 |
| Dan Griffin | Son | — | 14 | ~1926 |
| Mary Griffin | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Franklin, Ohio
Other, age 32
Franklin, Ohio · implied b. ~1898 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 20 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Spouse, age 42
Franklin-County, Ohio · implied b. ~1898 — 10 household members
| Surname | Griffin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Hamilton Township |
| 1935 Residence (County) | Franklin |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Griffin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Griffin
Spouse · 1940 · age 42 · b. ~1898 · Ohio
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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 — Franklin-County, Ohio
Open full size
1940 US Federal Census — Franklin-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03069-00085)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Janice Williams | 24 | Wife | — | Ohio |
| 42 | Johnnie Williams | 3 | Son | — | Ohio |
| 43 | Jerry L Williams | 2 | Son | — | Ohio |
| 44 | Hampton Gainer | 72 | Head | Farmer | West Virginia |
| 45 | Lula Gainer | 53 | Wife | — | West Virginia |
| 46 | Lester Gainer | 19 | Son | Farmer | Ohio |
| 47 | Carmen Gainer | 17 | Son | — | Ohio |
| 48 | Arthur Gainer | 14 | Son | — | Ohio |
| 49 | Patrick Griffin | 48 | Head | Farmer | Ireland |
| 50 | Mary Griffin THIS PERSON | 42 | Wife | — | Ohio |
| 51 | Mary Ann Griffin | 21 | Daughter | — | Ohio |
| 52 | Patrick Griffin | 19 | Son | — | Ohio |
| 53 | Martin Griffin | 17 | Son | Farmer | Ohio |
| 54 | Agnes Griffin | 16 | Daughter | — | Ohio |
| 55 | Dan Griffin | 14 | Son | — | Ohio |
| 56 | Margaret Griffin | 13 | Daughter | — | Ohio |
| 57 | Agnes Griffin | 11 | Daughter | — | Ohio |
| 58 | Ellen Griffin | 8 | Daughter | — | Ohio |
| 59 | Arthur Wilburn | 26 | Head | Farmer | Kentucky |
| 60 | Marie Wilburn | 20 | Wife | — | Ohio |
| 61 | Crystal A Wilburn | 2 | Daughter | — | Ohio |
| 62 | Ernest Peters | 25 | Head | Farming | Ohio |
| 63 | Lucile Peters | 22 | Wife | — | Ohio |
| 64 | Carol L Peters | 5 | Daughter | — | Ohio |
| 65 | Edward Detty | 30 | Head | Trackman | Ohio |
| 66 | Della Detty | 26 | Wife | — | Ohio |
| 67 | Dorothy Detty | 10 | Daughter | — | Ohio |
| 68 | Marilyn Detty | 9 | Daughter | — | Ohio |
| 69 | James Detty | 6 | Son | — | Ohio |
| 70 | Nancy Detty | 4 | Daughter | — | Ohio |
| 71 | Lois Detty | 2 | Daughter | — | Ohio |
| 72 | Odis Hart | 30 | Head | Trackman | Ohio |
| 73 | Ruth Hart | 25 | Wife | — | Kentucky |
| 74 | Billie Hart | 6 | Son | — | Ohio |
| 75 | Luther Coatlow | 32 | Head | Ditch Digger | Ohio |
| 76 | Helen Coatlow | 23 | Wife | — | Ohio |
| 77 | Ralph Coatlow | 7 | Son | — | Ohio |
| 78 | Robert Coatlow | 2 | Son | — | Ohio |
| 79 | Clarence Coatlow | 1 | Son | — | Ohio |
| 80 | John Bloomfield | 58 | Head | Oiler | Kentucky |
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)