MK
Mary Kaufman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Holmes-County, Ohio
Our Model Tree links this Mary Kaufman across the 1930 and 1940 US Censuses in Holmes-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 11-person household.
Age 23
b. ~1917
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Holmes-County, Ohio |
| Surname | Kaufman |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Paint Twp. |
| 1935 Residence (County) | Holmes |
| Additional Details | |
| Occupation | House Work |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 208 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | House Work |
| Township / Ward | Paint Twp |
| Est. Birth Year | ~1917 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edna Kaufman | Daughter | — | 10 | ~1930 |
| Katie Kaufman | Daughter | — | 17 | ~1923 |
| Mary Kaufman | Daughter | — | 23 | ~1917 |
| Arlen Kaufman | Son | — | 19 | ~1921 |
| Ben Kaufman | Head | — | 50 | ~1890 |
| Mattie Kaufman | Daughter | — | 7 | ~1933 |
| Mattie Kaufman | Spouse | — | 41 | ~1899 |
| Malinda Kaufman | Daughter | — | 21 | ~1919 |
| Benjamin Kaufman | Son | — | 3 | ~1937 |
| David Kaufman | Son | — | 14 | ~1926 |
| Joe Kaufman | Son | — | 12 | ~1928 |
Census Appearances
1930
Holmes, Ohio
Daughter, age 14
Holmes, Ohio · implied b. ~1916 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kauffman |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Holmes-County, Ohio
Daughter, age 23
Holmes-County, Ohio · implied b. ~1917 — 11 household members
| Surname | Kaufman |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Paint Twp. |
| 1935 Residence (County) | Holmes |
| Occupation | House Work |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 208 |
| Highest Grade | No 7 |
| 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 Kaufman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kaufman
Daughter · 1940 · age 23 · b. ~1917 · Ohio
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Sibling
Arlen Kaufman
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Kaufman
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mattie Kaufman
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Kaufman
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Benjamin Kaufman
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Kaufman
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Malinda Kaufman
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katie Kaufman
Sibling · 1940 · age 17
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 — Holmes-County, Ohio
Open full size
1940 US Federal Census — Holmes-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03087-00286)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edna Lengerd | 3 | Daughter | — | Delaware |
| 2 | Edna Line Lengerd | None | Margin | — | — |
| 3 | Eli S. C. Miller | 42 | Head | Farmer | Ohio |
| 4 | Clara Miller | 39 | Wife | — | Ohio |
| 5 | Aden Miller | 12 | Son | — | Ohio |
| 6 | Susie Miller | 10 | Daughter | — | Ohio |
| 7 | Emanuel Miller | 9 | Son | — | Ohio |
| 8 | Effie Miller | 7 | Daughter | — | Ohio |
| 9 | Eli Miller | 3 | Son | — | Ohio |
| 10 | Ada Miller | 1 | Daughter | — | Ohio |
| 11 | William A. Troyer | 35 | Head | Farmer | Ohio |
| 12 | Fanny Troyer | 32 | Wife | — | Ohio |
| 13 | David Troyer | 4 | Son | — | Ohio |
| 14 | Anna Troyer | 1 | Daughter | — | Ohio |
| 15 | Mary Anna Troyer | 30 | Hired Girl | House Work | Ohio |
| 16 | Ben D. Kaufman | 50 | Head | Farmer | Kansas |
| 17 | Mattie Kaufman | 41 | Wife | — | Ohio |
| 18 | Mary Kaufman THIS PERSON | 23 | Daughter | House Work | Ohio |
| 19 | Malinda Kaufman | 21 | Daughter | — | Ohio |
| 20 | Arlen Kaufman | 19 | Son | New Worker | Ohio |
| 21 | Katie Kaufman | 17 | Daughter | — | Ohio |
| 22 | David Kaufman | 14 | Son | Farm Hand | Ohio |
| 23 | Joe Kaufman | 12 | Son | — | Ohio |
| 24 | Edna Kaufman | 10 | Daughter | — | Ohio |
| 25 | Mattie Kaufman | 7 | Daughter | — | Ohio |
| 26 | Benjamin Kaufman | 3 | Son | — | Ohio |
| 27 | Aden Miller | 22 | Head | Farmer | Ohio |
| 28 | Eli D. Mast | 31 | Head | Farmer | Ohio |
| 29 | Anna Mast | 36 | Wife | — | Ohio |
| 30 | Demas Mast | 2 | Son | — | Ohio |
| 31 | Katie J. Miller | 17 | Hired Girl | House Work | Ohio |
| 32 | John S. Miller | 51 | Head | Farmer | Ohio |
| 33 | Fanny Miller | 54 | Wife | — | Ohio |
| 34 | Ella Miller | 19 | Daughter | — | Ohio |
| 35 | Sarah Miller | 15 | Daughter | — | Ohio |
| 36 | Joe J. Troyer | 35 | Head | Farm Hand | Ohio |
| 37 | Ida Troyer | 29 | Wife | — | Ohio |
| 38 | Ammon Troyer | 2 | Son | — | Ohio |
| 39 | Enos Troyer | 0 | Son | — | Ohio |
| 40 | Jonas J. Keim | 39 | 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)