JH
John Harper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Monroe-County, Ohio
Our Model Tree links this John Harper across the 1920, 1930 and 1940 US Censuses in Monroe-County, Ohio (XGBoost, ~Confirmed), with identified parents E & Catherine — first a head (b.~1899), then head of a 4-person household.
Age 41
b. ~1899
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Monroe-County, Ohio |
| Surname | Harper |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Malaga |
| 1935 Residence (County) | Monroe |
| Additional Details | |
| Occupation | teacher |
| Industry | Pub school |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 945 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Teacher |
| Township / Ward | Malaga |
| Est. Birth Year | ~1899 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Harper | Head | — | 41 | ~1899 |
| Keith Harper | Son | — | 18 | ~1922 |
| Jay Harper | Son | — | 16 | ~1924 |
| Mabel Harper | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Monroe, Ohio
Son, age 20
Monroe, Ohio · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Bavaria |
| Occupation | Teacher |
| Industry | District School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Monroe, Ohio
Head, age 31
Monroe, Ohio · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 23 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Monroe-County, Ohio
Head, age 41
Monroe-County, Ohio · implied b. ~1899 — 4 household members
| Surname | Harper |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Malaga |
| 1935 Residence (County) | Monroe |
| Occupation | teacher |
| Industry | Pub school |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 945 |
| Highest Grade | C 1 |
| 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 John Harper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father E Harper (~0.92 confidence) and mother Catherine Harper (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
E Harper
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Catherine Harper
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Harper
Head · 1940 · age 41 · b. ~1899 · 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 — Monroe-County, Ohio
Open full size
1940 US Federal Census — Monroe-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03117-00284)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Harper | 17 | son | — | Ohio |
| 42 | Nancy Harper | 9 | daughter | — | Ohio |
| 43 | John Harper THIS PERSON | 41 | head | Teacher | Ohio |
| 44 | Mabel Harper | 39 | wife | — | Ohio |
| 45 | Keith Harper | 18 | son | — | Ohio |
| 46 | Jay Harper | 16 | son | — | Ohio |
| 47 | Timothy Jones | 40 | head | Farmer | Ohio |
| 48 | Ethel Jones | 39 | wife | — | Ohio |
| 49 | Mac Jones | 51 | head | Farmer | Ohio |
| 50 | Freda Jones | 48 | sister | — | Ohio |
| 51 | Jacob Riggenbach | 79 | head | — | Switzerland |
| 52 | Mary Riggenbach | 61 | wife | — | Ohio |
| 53 | Edwin Riggenbach | 26 | son | Farmer | Ohio |
| 54 | Mabel Riggenbach | 24 | wife | — | Ohio |
| 55 | Irene Riggenbach | 20 | daughter | — | Ohio |
| 56 | Patricia Riggenbach | 2 | granddaughter | — | Ohio |
| 57 | Eddie Riggenbach | 1 | grandson | — | Ohio |
| 58 | Frank Peterman | 80 | head | Farmer | Ohio |
| 59 | Lillie Peterman | 75 | wife | — | Ohio |
| 60 | Alton Maury | 35 | lodger | Laborer | Ohio |
| 61 | Wayne Hum | 44 | head | Laborer | W. Virginia |
| 62 | Virginia Hum | 36 | wife | — | W. Virginia |
| 63 | Donald Hum | 16 | son | — | W. Virginia |
| 64 | Mary Hum | 13 | daughter | — | W. Virginia |
| 65 | Stella Hum | 10 | daughter | — | Louisiana |
| 66 | Dorothy Hum | 7 | daughter | — | Ohio |
| 67 | Martha Hum | 1 | daughter | — | Ohio |
| 68 | Charlotte Hum | 0 | daughter | — | Ohio |
| 69 | Frank Hinton | 47 | head | Truck Driver | Ohio |
| 70 | Mildred Hinton | 38 | wife | — | Ohio |
| 71 | Robert Hinton | 14 | son | — | Ohio |
| 72 | Jeane Hinton | 12 | daughter | — | Ohio |
| 73 | Betty Hinton | 10 | daughter | — | Ohio |
| 74 | William Hinton | 5 | son | — | Ohio |
| 75 | George Gibbons | 61 | head | Farmer | Ohio |
| 76 | Blanche Gibbons | 59 | wife | — | Ohio |
| 77 | Eddy Gibbons | None | Florine | — | 7 |
| 78 | Marion Thomas | 61 | head | Farmer | Ohio |
| 79 | Pearl Thomas | 50 | wife | — | Ohio |
| 80 | Blaine Thomas | 26 | son | Laborer | Ohio |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)