MC
Mary Curtis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Miami-County, Ohio
Our Model Tree links this Mary Curtis across the 1920, 1930 and 1940 US Censuses in Miami-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1874), then head of a 4-person household.
Age 66
b. ~1874
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Miami-County, Ohio |
| Surname | Curtis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Lost Creek Twp |
| 1935 Residence (County) | Miami |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Lost Creek Twp |
| Est. Birth Year | ~1874 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Curtis | Daughter | — | 15 | ~1925 |
| Charles Curtis | Head | — | 55 | ~1885 |
| Charles Curtis | Son | — | 20 | ~1920 |
| Mary Curtis | Spouse | — | 66 | ~1874 |
Census Appearances
1920
Miami, Ohio
Spouse, age 48
Miami, Ohio · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Miami, Ohio
Other, age 58
Miami, Ohio · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Miami-County, Ohio
Spouse, age 66
Miami-County, Ohio · implied b. ~1874 — 4 household members
| Surname | Curtis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Lost Creek Twp |
| 1935 Residence (County) | Miami |
| Highest Grade | 8 |
| 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 Curtis 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 Curtis
Spouse · 1940 · age 66 · b. ~1874 · 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 — Miami-County, Ohio
Open full size
1940 US Federal Census — Miami-County, Ohio
Page Contents
32 people indexed on this census page (nara:1940:m-t0627-03115-00475)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary | 48 | Wife | — | Ohio |
| 2 | Richard | 16 | Son | — | Ohio |
| 3 | Mary | 14 | Daughter | — | Ohio |
| 4 | Norma | 11 | Daughter | — | Ohio |
| 5 | Barbara Mary | 67 | Mother | — | Ohio |
| 6 | Charles W Curtis | 55 | Head | Farm Operator | Ohio |
| 7 | Mary Curtis THIS PERSON | 66 | Wife | — | Ohio |
| 8 | Charles Jr Curtis | 20 | Son | Laborer | Ohio |
| 9 | Mary Etta Curtis | 15 | Daughter | — | Ohio |
| 10 | Carl Cramer | 53 | Head | Farm Operator | Ohio |
| 11 | Verda Cramer | 49 | Wife | — | Ohio |
| 12 | Mabel Cramer | 20 | Daughter | — | Ohio |
| 13 | Stanley Mays | 52 | Head | Millwright | Ohio |
| 14 | Neva Mays | 46 | Wife | — | Ohio |
| 15 | Virginia Mays | 22 | Daughter | — | Ohio |
| 16 | James Kiser | 39 | Head | Farm Operator | Ohio |
| 17 | Gladys Kiser | 37 | Wife | — | Ohio |
| 18 | Harold Kiser | 17 | Son | Farm Hand | Ohio |
| 19 | Leonard Kiser | 16 | Son | Farm Hand | Ohio |
| 20 | Melvin Kiser | 14 | Son | — | Ohio |
| 21 | Roger Kiser | 14 | Son | — | Ohio |
| 22 | Mildred Kiser | 12 | Daughter | — | Ohio |
| 23 | Hazel Kiser | 10 | Daughter | — | Ohio |
| 24 | Dorothy Kiser | 8 | Daughter | — | Ohio |
| 25 | Furman Jr Kiser | 3 | Son | — | Ohio |
| 26 | Phyllis Kiser | 2 | Daughter | — | Ohio |
| 27 | Ernest Kemp | 19 | Hired hand | Farm Operator | Ohio |
| 28 | Harry Gray | 33 | Head | Farm Operator | Ohio |
| 29 | Mary Gray | 29 | Wife | — | Ohio |
| 30 | Roy Gray | 9 | Son | — | Ohio |
| 31 | Dorena Gray | 8 | Daughter | — | Ohio |
| 32 | Otto Gray | 6 | 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)