MH
Mary Harper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lawrence-County, Ohio
Our Model Tree links this Mary Harper across the 1930 and 1940 US Censuses in Lawrence-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 11-person household.
Age 44
b. ~1896
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lawrence-County, Ohio |
| Surname | Harper |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (County) | Lawrence |
| Additional Details | |
| Highest Grade | No 6 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Lawrence Twp |
| Est. Birth Year | ~1896 |
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 |
|---|---|---|---|---|
| Wilma Harper | Daughter | — | 11 | ~1929 |
| Garnet Harper | Daughter | — | 18 | ~1922 |
| Helen Harper | Daughter | — | 1 | ~1939 |
| Mary Harper | Daughter | — | 15 | ~1925 |
| Anna Harper | Daughter | — | 6 | ~1934 |
| Elma Harper | Daughter | — | 3 | ~1937 |
| Hazel Harper | Daughter | — | 13 | ~1927 |
| Alvin Harper | Head | — | 56 | ~1884 |
| George Harper | Other | — | 74 | ~1866 |
| Alvin Harper | Son | — | 9 | ~1931 |
| Mary Harper | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Lawrence, Ohio
Other, age 34
Lawrence, Ohio · implied b. ~1896 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 21 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Lawrence-County, Ohio
Spouse, age 44
Lawrence-County, Ohio · implied b. ~1896 — 11 household members
| Surname | Harper |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (County) | Lawrence |
| Highest Grade | No 6 |
| 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 Harper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Harper
Spouse · 1940 · age 44 · b. ~1896 · 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 — Lawrence-County, Ohio
Open full size
1940 US Federal Census — Lawrence-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03097-00052)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Laughter Calatlie|Calatlee | None | F | — | — |
| 2 | Son Hafline | None | M | — | — |
| 3 | Alvia H. Fullen | 53 | Head | Labor Wpa | Ohio |
| 4 | Laura M. Fullen | 54 | Wife | — | Kentucky |
| 5 | Marriam E. Fullen | 17 | Son | Labor | Ohio |
| 6 | Oscar R. Harbalt | 27 | Head | Labor Wpa | Ohio |
| 7 | Pauline G. Harbalt | 24 | Wife | — | Ohio |
| 8 | Chinthie P. Harbalt | 6 | Daughter | — | Ohio |
| 9 | Donald R. Harbalt | 4 | Son | — | Ohio |
| 10 | Rhoda M. Harbalt | 2 | Daughter | — | Ohio |
| 11 | Thomas B. Lester | 59 | Head | Labor | West Virginia |
| 12 | Tempa E. Lester | 38 | Wife | — | West Virginia |
| 13 | George E. Lester | 13 | Son | — | Kentucky |
| 14 | Robert E. Lester | 10 | Son | — | West Virginia |
| 15 | Louis M. Lester | 9 | Son | — | West Virginia |
| 16 | Marvin R. Lester | 6 | Son | — | Ohio |
| 17 | Arnold W. Lester | 3 | Son | — | Ohio |
| 18 | Nanie M. Lester | 2 | Daughter | — | Ohio |
| 19 | Herbert E. Lester | 0 | Son | — | Ohio |
| 20 | John Cline | 17 | Head | Labor | Kentucky |
| 21 | Flora Cline | 22 | Wife | — | Kentucky |
| 22 | Alvin Harper | 56 | Head | Proprietor | Ohio |
| 23 | Mary Harper THIS PERSON | 44 | Wife | — | Ohio |
| 24 | Garnet L. Harper | 18 | Daughter | — | Ohio |
| 25 | Mary J. Harper | 15 | Daughter | — | Ohio |
| 26 | Hazel M. Harper | 13 | Daughter | — | Ohio |
| 27 | Wilma J. Harper | 11 | Daughter | — | Ohio |
| 28 | Alvin Jr. Harper | 9 | Son | — | Ohio |
| 29 | Anna E. Harper | 6 | Daughter | — | Ohio |
| 30 | Elma J. Harper | 3 | Daughter | — | Ohio |
| 31 | Helen J. Harper | 1 | Daughter | — | Ohio |
| 32 | George Harper | 74 | Father in law | — | West Virginia |
| 33 | Ogle Jenkins | 38 | Head | Labor | Ohio |
| 34 | Grace Jenkins | 30 | Wife | — | Kentucky |
| 35 | Wanda J. Jenkins | 11 | Daughter | — | Ohio |
| 36 | Wilba J. Jenkins | 10 | Daughter | — | Ohio |
| 37 | Zillie F. Jenkins | 8 | Daughter | — | Ohio |
| 38 | Claire Jenkins | 6 | Daughter | — | Ohio |
| 39 | Margie S. Jenkins | 4 | Daughter | — | Ohio |
| 40 | Ogle Jr. Jenkins | 1 | 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)