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John Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Butler-County, Ohio
Our Model Tree links this John Brock across the 1930 and 1940 US Censuses in Butler-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 7-person household.
Age 46
b. ~1894
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Butler-County, Ohio |
| Surname | Brock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Hamilton City |
| 1935 Residence (County) | Butler |
| Additional Details | |
| Occupation | Cement worker |
| Industry | Paper Fiber Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Cement Worker |
| Township / Ward | Hamilton City |
| Est. Birth Year | ~1894 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Brock | Daughter | — | 15 | ~1925 |
| Ralph Brock | Son | — | 18 | ~1922 |
| Ray Brock | Son | — | 13 | ~1927 |
| Glatha Brock | Spouse | — | 41 | ~1899 |
| John Brock | Head | — | 46 | ~1894 |
| James Brock | Son | — | 9 | ~1931 |
| Myrtle Brock | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Butler, Ohio
Head, age 36
Butler, Ohio · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 21 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Carpenter |
| Industry | Paper Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 3500 |
| Home Value / Rent | R |
| Veteran | O |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Butler-County, Ohio
Head, age 46
Butler-County, Ohio · implied b. ~1894 — 7 household members
| Surname | Brock |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Hamilton City |
| 1935 Residence (County) | Butler |
| Occupation | Cement worker |
| Industry | Paper Fiber Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Brock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Brock
Head · 1940 · age 46 · b. ~1894 · 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 — Butler-County, Ohio
Open full size
1940 US Federal Census — Butler-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03033-00450)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donna Sue Payne | 1 | Daughter | — | Kentucky |
| 2 | Ronald Payne | 0 | Son | — | Kentucky |
| 3 | John Brock THIS PERSON | 46 | Head | Cement Worker | Kentucky |
| 4 | Glatha Brock | 41 | Wife | — | Kentucky |
| 5 | Myrtle Brock | 21 | Daughter | Clerk | Kentucky |
| 6 | Ralph Brock | 18 | Son | — | Kentucky |
| 7 | Evelyn Brock | 15 | Daughter | — | Kentucky |
| 8 | Ray Brock | 13 | Son | — | Ohio |
| 9 | James Brock | 9 | Son | — | Ohio |
| 10 | Pleas Young | 42 | Head | Laborer | Kentucky |
| 11 | Viola Young | 34 | Wife | — | Ohio |
| 12 | Irene Young | 17 | Daughter | — | Ohio |
| 13 | Pleas Jr Young | 14 | Son | — | Ohio |
| 14 | Marie Young | 10 | Daughter | — | Ohio |
| 15 | James C. Young | 6 | Son | — | Ohio |
| 16 | Frank D Young | 4 | Son | — | Ohio |
| 17 | Ellen Loretta Young | 0 | Daughter | — | Ohio |
| 18 | John Spivey | 52 | Head | Electric Welder | Kentucky |
| 19 | Rose Spivey | 40 | Wife | — | Kentucky |
| 20 | Evelyn Spivey | 16 | Daughter | Housework | Ohio |
| 21 | Elizabeth Spivey | 14 | Daughter | — | Ohio |
| 22 | Alvin Spivey | 12 | Son | — | Ohio |
| 23 | Arnold Spivey | 9 | Son | — | Ohio |
| 24 | Rose Mary Spivey | 7 | Daughter | — | Ohio |
| 25 | Ronald Spivey | 5 | Son | — | Ohio |
| 26 | Janet Sue Spivey | 2 | Daughter | — | Ohio |
| 27 | Darrell Spivey | 18 | Son | Laborer | Ohio |
| 28 | Thelma Spivey | 18 | Daughter-in-law | — | Kentucky |
| 29 | Albert Molck | 36 | Head | Crater | Illinois |
| 30 | Ruby Molck | 33 | Wife | — | Kentucky |
| 31 | Joan Molck | 6 | Daughter | — | Ohio |
| 32 | Albert Jr Molck | 2 | Son | — | Ohio |
| 33 | Homer Carter | 24 | Brother-in-law | Laborer | Illinois |
| 34 | Albert Clawson | 36 | Lodger | Laborer | Illinois |
| 35 | Lola H. Anderson | 62 | Head | — | Kentucky |
| 36 | Anthony Loschiavo | 37 | Head | Truck Driver | Ohio |
| 37 | Elizabeth Loschiavo | 36 | Wife | — | Ohio |
| 38 | Theodore Kleiser | 75 | Head | — | Switzerland |
| 39 | Carrie Kleiser | 68 | Wife | — | Kentucky |
| 40 | Marie Kleiser | 35 | Daughter | Stenographer | 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)