MC
Mary Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jackson-County, Ohio
Our Model Tree links this Mary Callahan across the 1920, 1930 and 1940 US Censuses in Jackson-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 7-person household.
Age 48
b. ~1892
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Ohio |
| Surname | Callahan |
| Given Name | Mary E |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Jackson City |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Jackson City |
| Est. Birth Year | ~1892 |
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 |
|---|---|---|---|---|
| Ruth Callahan | Daughter | — | 21 | ~1919 |
| Anna Callahan | Daughter | — | 13 | ~1927 |
| Forest Callahan | Head | — | 49 | ~1891 |
| Jack Callahan | Son | — | 11 | ~1929 |
| Thomas Callahan | Son | — | 8 | ~1932 |
| David Callahan | Son | — | 9 | ~1931 |
| Mary Callahan | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Jackson, Ohio
Spouse, age 27
Jackson, Ohio · implied b. ~1893 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Jackson, Ohio
Spouse, age 37
Jackson, Ohio · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 22 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Jackson-County, Ohio
Spouse, age 48
Jackson-County, Ohio · implied b. ~1892 — 7 household members
| Surname | Callahan |
| Given Name | Mary E |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Jackson City |
| 1935 Residence (County) | Jackson |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Callahan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Callahan
Spouse · 1940 · age 48 · b. ~1892 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Jackson-County, Ohio
Open full size
1940 US Federal Census — Jackson-County, Ohio
Page Contents
16 people indexed on this census page (nara:1940:m-t0627-03089-00307)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Matilda Stroth | 26 | wife | — | Ohio |
| 42 | Ivan Stroth | 7 | son | — | Ohio |
| 43 | Betty Ann Stroth | 5 | daughter | — | Ohio |
| 44 | John Stroth | 50 | brother | — | Ohio |
| 45 | Delmar Stroth | 43 | brother | — | Ohio |
| 46 | Herbert A Cranscon|Cranscom | 62 | head | Laborer | Ohio |
| 47 | Mary E Cranscon|Cranscom | 64 | wife | — | Ohio |
| 48 | Forest E Callahan | 49 | head | Carpenter | Ohio |
| 49 | Mary E Callahan THIS PERSON | 48 | wife | — | Ohio |
| 50 | Ruth Callahan | 21 | daughter | Teacher | Ohio |
| 51 | Anna Marie Callahan | 13 | daughter | — | Ohio |
| 52 | Jack Callahan | 11 | son | — | Ohio |
| 53 | David Callahan | 9 | son | — | Ohio |
| 54 | Thomas Callahan | 8 | son | — | Ohio |
| 55 | Arthur Roberts | 71 | head | Deputy City Clerk | Ohio |
| 56 | Sophia Roberts | 67 | wife | — | 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)