MK
Mary Kramer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Ohio
Our Model Tree links this Mary Kramer across the 1930 and 1940 US Censuses in Mercer-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1883), then head of a 7-person household.
Age 57
b. ~1883
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Ohio |
| Surname | Kramer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Granville Twp |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | house wife |
| Industry | home |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | House Wife |
| Township / Ward | Granville Twp |
| Est. Birth Year | ~1883 |
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 Kramer | Spouse | — | 57 | ~1883 |
| Sebastian Kramer | Son | — | 18 | ~1922 |
| Anthony Kramer | Son | — | 21 | ~1919 |
| Emma Kramer | Daughter | — | 19 | ~1921 |
| Anthony Kramer | Head | — | 60 | ~1880 |
| Mark Kramer | Son | — | 12 | ~1928 |
| Dorothy Kramer | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Mercer, Ohio
Spouse, age 47
Mercer, Ohio · implied b. ~1883 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kremer |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 20 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mercer-County, Ohio
Spouse, age 57
Mercer-County, Ohio · implied b. ~1883 — 7 household members
| Surname | Kramer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Granville Twp |
| 1935 Residence (County) | Mercer |
| Occupation | house wife |
| Industry | home |
| 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 Kramer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kramer
Spouse · 1940 · age 57 · b. ~1883 · 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 — Mercer-County, Ohio
Open full size
1940 US Federal Census — Mercer-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03114-00321)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jerome Hess | 17 | Son | Farmer | Ohio |
| 42 | Victor Hess | 15 | Son | Farmer | Ohio |
| 43 | Rita Hess | 12 | Daughter | — | Ohio |
| 44 | Arthur Hess | 8 | Son | — | Ohio |
| 45 | Henry Knapke | 49 | Head | Farmer | Ohio |
| 46 | Theresa Knapke | 49 | Wife | None | Ohio |
| 47 | Theodore Knapke | 18 | Son | Laborer | Ohio |
| 48 | Rosemary Knapke | 18 | Daughter | None | Ohio |
| 49 | Frederick Knapke | 15 | Son | None | Ohio |
| 50 | Dorothy Knapke | 12 | Daughter | — | Ohio |
| 51 | Ralph Knapke | 10 | Son | — | Ohio |
| 52 | Henry Knapke | 9 | Son | — | Ohio |
| 53 | Stella Knapke | 7 | Daughter | — | Ohio |
| 54 | Virginia Knapke | 4 | Daughter | — | Ohio |
| 55 | Donald Knapke | 2 | Son | — | Ohio |
| 56 | William Schmeising | 48 | Head | Farmer | Ohio |
| 57 | Anna Schmeising | 47 | Wife | None | Ohio |
| 58 | Herbert Schmeising | 24 | Son | Truck Driver | Ohio |
| 59 | Homer Schmeising | 19 | Son | Laborer | Ohio |
| 60 | Irene Schmeising | 13 | Daughter | — | Ohio |
| 61 | Rosa Thee | 51 | Head | House Wife | Ohio |
| 62 | Leo Thee | 21 | Son | Farmer | Ohio |
| 63 | William Thee | 21 | Son | Chauffer | Ohio |
| 64 | Paul Thee | 20 | Son | Assist Farmer | Ohio |
| 65 | Irma Thee | 17 | Daughter | None | Ohio |
| 66 | Casper Thee | 15 | Son | None | Ohio |
| 67 | Ben Koster | 69 | Head | Farmer | Ohio |
| 68 | Catherine Koster | 64 | Wife | None | Ohio |
| 69 | M. Agatha Koster | 33 | Daughter | Nurse Work | Ohio |
| 70 | Arthur Koster | 29 | Son | Study In School | Ohio |
| 71 | Richard Koster | 27 | Son | Laborer | Ohio |
| 72 | Alberta Koster | 18 | Niece | Student | Ohio |
| 73 | Anthony Kramer | 60 | Head | Farmer | Ohio |
| 74 | Mary Kramer THIS PERSON | 57 | Wife | House Wife | Ohio |
| 75 | Anthony Kramer | 21 | Son | Assist Farmer | Ohio |
| 76 | Emma Kramer | 19 | Daughter | Seamstress | Ohio |
| 77 | Sebastian Kramer | 18 | Son | House Work | Ohio |
| 78 | Dorothy Kramer | 16 | Daughter | Student | Ohio |
| 79 | Mark Kramer | 12 | Son | — | Ohio |
| 80 | Adam Keller | 60 | Head | Farmer | 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)