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John Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jessamine-County, Kentucky
Our Model Tree links this John Brock across the 1930 and 1940 US Censuses in Jessamine-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jessamine-County, Kentucky |
| Surname | Brock |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Dist 5 (Magisterial) |
| 1935 Residence (County) | Jessamine |
| Additional Details | |
| Highest Grade | 3 |
| 1935 Residence | Same house |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Dist 5 Magisterial |
| Est. Birth Year | ~1927 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Maude Brock | Spouse | — | 50 | ~1890 |
| Mary Brock | Daughter | — | 22 | ~1918 |
| John Brock | Son | — | 13 | ~1927 |
| Sam Brock | Head | — | 55 | ~1885 |
| Catherine Brock | Daughter | — | 10 | ~1930 |
| Julia Brock | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Fayette, Kentucky
Other, age 3
Fayette, Kentucky · implied b. ~1927 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | John W |
| Relationship to Head | Grand son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jessamine-County, Kentucky
Son, age 13
Jessamine-County, Kentucky · implied b. ~1927 — 6 household members
| Surname | Brock |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Dist 5 (Magisterial) |
| 1935 Residence (County) | Jessamine |
| Highest Grade | 3 |
| 1935 Residence | Same house |
| 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
Son · 1940 · age 13 · b. ~1927 · Kentucky
★ You are viewing this record
Sibling
Catherine Brock
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Brock
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Brock
Sibling · 1940 · age 22
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 — Jessamine-County, Kentucky
Open full size
1940 US Federal Census — Jessamine-County, Kentucky
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01322-00296)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Glendall Reynolds | 12 | Son | — | Kentucky |
| 2 | Alice Reynolds | 10 | Daughter | — | Kentucky |
| 3 | Alvin Reynolds | 8 | Son | — | Kentucky |
| 4 | Penelton Reynolds | 3 | Son | — | Kentucky |
| 5 | Galva Reynolds | 2 | Son | — | Kentucky |
| 6 | Lindsey Reynolds | 68 | Head | Farmer | Kentucky |
| 7 | Margaret Reynolds | 67 | Wife | — | Kentucky |
| 8 | Coy Reynolds | 33 | Son | Farmer | Kentucky |
| 9 | Dora Reynolds | 24 | Daughter-in-law | — | Kentucky |
| 10 | Plinia Reynolds | 6 | Son | — | Kentucky |
| 11 | Margaret Reynolds | 3 | Granddaughter | — | Kentucky |
| 12 | Morris Walker | 28 | Head | Farmer | Kentucky |
| 13 | Lillie Walker | 26 | Wife | — | Kentucky |
| 14 | Amos Walker | 10 | Son | — | Kentucky |
| 15 | Jim Keel | 40 | Head | Farmer | Kentucky |
| 16 | Vernie Keel | 40 | Wife | — | Kentucky |
| 17 | Bill Keel | 21 | Son | Farmer | Kentucky |
| 18 | Francis Keel | 20 | Daughter | — | Kentucky |
| 19 | Ed Jack Keel | 14 | Son | — | Kentucky |
| 20 | Joseph Thomas Keel | 2 | Son | — | Kentucky |
| 21 | Sam Walker | 71 | Head | Farmer | Kentucky |
| 22 | Lessie B. Walker | 67 | Wife | — | Kentucky |
| 23 | Sam Brock | 55 | Head | Laborer | Kentucky |
| 24 | Maude Brock | 50 | Wife | — | Kentucky |
| 25 | Mary Ella Brock | 22 | Daughter | — | Kentucky |
| 26 | Julia Brock | 14 | Daughter | — | Kentucky |
| 27 | John W. Brock THIS PERSON | 13 | Son | — | Kentucky |
| 28 | Catherine Brock | 10 | Daughter | — | Kentucky |
| 29 | Brown Gullett | 54 | Head | Farmer | Kentucky |
| 30 | Lucie Gullett | 54 | Wife | — | Kentucky |
| 31 | Casey Gullett | 29 | Son | Farmer | Kentucky |
| 32 | Bettie Gullett | 16 | Daughter | — | Kentucky |
| 33 | Land Newton Gullett | 15 | Nephew | — | Kentucky |
| 34 | Robert Alexander | 26 | Head | Farmer | Kentucky |
| 35 | Mildred Alexander | 25 | Wife | Farmer | Kentucky |
| 36 | Elma Joyce Alexander | 6 | Daughter | — | Kentucky |
| 37 | Bobbie Jean Alexander | 4 | Son | — | Kentucky |
| 38 | Billy Leon Alexander | 2 | Son | — | Kentucky |
| 39 | Virgil Gullett | 19 | Head | Farmer | Kentucky |
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)