MH
Margaret Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Ohio
Our Model Tree links this Margaret Hart across the 1930 and 1940 US Censuses in Mercer-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Ohio |
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Recovery |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Recovery |
| Est. Birth Year | ~1925 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Alfred Hart | Son | — | 11 | ~1929 |
| Patrick Hart | Other | — | 81 | ~1859 |
| Leo Hart | Son | — | 7 | ~1933 |
| Thomas Hart | Head | — | 48 | ~1892 |
| Dorothy Hart | Spouse | — | 48 | ~1892 |
| John Hart | Son | — | 13 | ~1927 |
| George Hart | Son | — | 19 | ~1921 |
| Mary Hart | Daughter | — | 17 | ~1923 |
| Ann Hart | Daughter | — | 9 | ~1931 |
| Margaret Hart | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Mercer, Ohio
Daughter, age 5
Mercer, Ohio · implied b. ~1925 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mercer-County, Ohio
Daughter, age 15
Mercer-County, Ohio · implied b. ~1925 — 10 household members
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Recovery |
| 1935 Residence (County) | Mercer |
| Highest Grade | No 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 Margaret Hart across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Hart
Daughter · 1940 · age 15 · b. ~1925 · Ohio
★ You are viewing this record
Sibling
John Hart
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Hart
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Hart
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Hart
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Hart
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Hart
Sibling · 1940 · age 19
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 — 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-t0627-03114-00663)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lewis Schenck | 79 | Head | — | Ohio |
| 42 | Bertha A. Schenck | 58 | Wife | — | Switzerland |
| 43 | Alma Schenck | 30 | Daughter | — | Ohio |
| 44 | Thomas O. Hart | 48 | Head | Farmer | Ohio |
| 45 | Dorothy Hart | 48 | Wife | — | Ohio |
| 46 | Patrick Hart | 81 | Father | — | Ohio |
| 47 | George Hart | 19 | Son | Farm Hand | Ohio |
| 48 | Mary Catherine Hart | 17 | Daughter | — | Ohio |
| 49 | Margaret Hart THIS PERSON | 15 | Daughter | — | Ohio |
| 50 | John Hart | 13 | Son | — | Ohio |
| 51 | Alfred Hart | 11 | Son | — | Ohio |
| 52 | Ann Hart | 9 | Daughter | — | Ohio |
| 53 | Leo Hart | 7 | Son | — | Ohio |
| 54 | Geo. O. Wolf | 49 | Head | Farmer | Ohio |
| 55 | Inez Wolf | 40 | Wife | — | Ohio |
| 56 | Albert Wolf | 53 | Brother | Farm Hand | Ohio |
| 57 | Clara Wolf | 45 | Sister | — | Ohio |
| 58 | Homer Snell | 42 | Head | Civil Engineer | Iowa |
| 59 | Bonnie O. Snell | 36 | Wife | — | Arkansas |
| 60 | Annie Snell | 74 | Mother | — | Texas |
| 61 | Anton O. Kahlig | 78 | Head | — | Germany |
| 62 | Anthony W. Kahlig | 50 | Son | Farm Hand | Ohio |
| 63 | Barbara Kahlig | 51 | Daughter | — | Indiana |
| 64 | Henry O. Westenhofer | 49 | Head | Farmer | Ohio |
| 65 | Mabel Westenhofer | 45 | Wife | — | Ohio |
| 66 | Amelia Westenhofer | 67 | Mother | — | Ohio |
| 67 | Hilda Westenhofer | 19 | Daughter | — | Ohio |
| 68 | Rosemary Westenhofer | 7 | Daughter | — | Ohio |
| 69 | Edward O. Stein | 41 | Head | Farmer | Ohio |
| 70 | Rose Stein | 35 | Wife | — | Ohio |
| 71 | Herbert Stein | 12 | Son | — | Ohio |
| 72 | Dolores Stein | 7 | Daughter | — | Ohio |
| 73 | Ferdinand Stein | 16 | Hired Hand | Farm Hand | Ohio |
| 74 | Lester J. O. King | 61 | Head | Farm | Ohio |
| 75 | Olive King | 33 | Daughter | — | Ohio |
| 76 | James Bowers | 15 | Orphan | — | Ohio |
| 77 | Margaret Bowers | 15 | Orphan | — | Ohio |
| 78 | Raymond O. Brackman | 34 | Head | Punch Press Oper. | Ohio |
| 79 | Anna Brackman | 30 | Wife | — | Ohio |
| 80 | Linus Brackman | 6 | Son | — | Ohio |
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)