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John Blair — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Highland-County, Ohio
Our Model Tree links this John Blair across the 1920, 1930 and 1940 US Censuses in Highland-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 4-person household.
Age 73
b. ~1867
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Highland-County, Ohio |
| Surname | Blair |
| Given Name | John P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Concord Twp |
| 1935 Residence (County) | Highland |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 121 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Farmer |
| Township / Ward | Concord Twp |
| Est. Birth Year | ~1867 |
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 |
|---|---|---|---|---|
| Exie Blair | Daughter | — | 30 | ~1910 |
| John Blair | Head | — | 73 | ~1867 |
| Homer Blair | Son | — | 40 | ~1900 |
| Ella Blair | Spouse | — | 64 | ~1876 |
Census Appearances
1920
Highland, Ohio
Head, age 53
Highland, Ohio · implied b. ~1867 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Highland, Ohio
Head, age 63
Highland, Ohio · implied b. ~1867 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 22 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Highland-County, Ohio
Head, age 73
Highland-County, Ohio · implied b. ~1867 — 4 household members
| Surname | Blair |
| Given Name | John P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Concord Twp |
| 1935 Residence (County) | Highland |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 121 |
| Highest Grade | 5 |
| 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 Blair across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Blair
Head · 1940 · age 73 · b. ~1867 · 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 — Highland-County, Ohio
Open full size
1940 US Federal Census — Highland-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03085-00089)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nellie Shaw | 33 | Head | — | Ohio |
| 2 | Merrill Shaw | 15 | Son | — | Ohio |
| 3 | Howard Shaw | 13 | Son | — | Ohio |
| 4 | Doris Shaw | 11 | Daughter | — | Ohio |
| 5 | Madlon Shaw | 5 | Daughter | — | Ohio |
| 6 | Hugh Shaw | 4 | Son | — | Ohio |
| 7 | Virgil Wilmoth | 37 | Head | Farmer | Ohio |
| 8 | Nellie Wilmoth | 39 | Wife | — | Ohio |
| 9 | Heeber Wilmoth | 21 | Son | Mechanic | Ohio |
| 10 | Robert Wilmoth | 18 | Son | Helper | Ohio |
| 11 | Victor Wilmoth | 16 | Son | — | Ohio |
| 12 | Marlin Wilmoth | 14 | Son | — | Ohio |
| 13 | Marvin Wilmoth | 14 | Son | — | Ohio |
| 14 | John P Blair THIS PERSON | 73 | Head | Farmer | Ohio |
| 15 | Ella Blair | 64 | Wife | — | Ohio |
| 16 | Homer D. Blair | 40 | Son | Farmer | Ohio |
| 17 | Exie L. Blair | 30 | Daughter | — | Ohio |
| 18 | E. S. Redkey | 63 | Head | — | Ohio |
| 19 | Agnes Redkey | 60 | Wife | — | Ohio |
| 20 | Wilma L Redkey | 18 | Daughter | — | Ohio |
| 21 | Ralph Walker | 31 | Head | Farmer | Ohio |
| 22 | Lois Walker | 26 | Wife | — | Ohio |
| 23 | Janet Walker | 2 | Daughter | — | Ohio |
| 24 | Pearl Bowden | 62 | Head | Farmer | Ohio |
| 25 | Nancy Jane Bowden | 82 | Mother | — | Ohio |
| 26 | A. J. Webster | 71 | Head | — | Ohio |
| 27 | Eva Webster | 69 | Wife | — | Ohio |
| 28 | Ray Webster | 18 | Son | Laborer | Ohio |
| 29 | Alice Webster | 5 | Granddaughter | — | Ohio |
| 30 | William Siemens | 81 | Head | Farmer | Germany |
| 31 | Kate Siemens | 73 | Wife | — | Ohio |
| 32 | Wyoma Spinks | 54 | Head | — | Ohio |
| 33 | Richard Spinks | 18 | Son | Farmer | Ohio |
| 34 | Mary Jane Spinks | 17 | Daughter | — | Ohio |
| 35 | William Spinks | 13 | Son | — | Ohio |
| 36 | George Brown | 25 | Head | Manager | Ohio |
| 37 | Octa Brown | 45 | Servant | Housekeeper | Ohio |
| 38 | Evelyn Brown | 9 | Daughter | — | Ohio |
| 39 | Ray Tayman | 26 | Head | Laborer | Ohio |
| 40 | Gladys Tayman | 21 | Wife | — | 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)