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Mary Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bell-County, Kentucky
Our Model Tree links this Mary Brock across the 1930 and 1940 US Censuses in Bell-County, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bell-County, Kentucky |
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magist. Dist No 3 |
| Additional Details | |
| Highest Grade | No 0 |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Magist Dist No 3 |
| Est. Birth Year | ~1922 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Brock | Daughter | — | 18 | ~1922 |
| Laura Brock | Spouse | — | 39 | ~1901 |
| Shirley Brock | Daughter | — | 2 | ~1938 |
| Jennie Brock | Daughter | — | 5 | ~1935 |
| Nermus Brock | Son | — | 13 | ~1927 |
| Hazel Brock | Daughter | — | 10 | ~1930 |
| Elijah Brock | Head | — | 45 | ~1895 |
| Denser Brock | Son | — | 15 | ~1925 |
Census Appearances
1930
Bell, Kentucky
Daughter, age 7
Bell, Kentucky · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Bell-County, Kentucky
Daughter, age 18
Bell-County, Kentucky · implied b. ~1922 — 8 household members
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magist. Dist No 3 |
| Highest Grade | No 0 |
| 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 Mary Brock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brock
Daughter · 1940 · age 18 · b. ~1922 · Kentucky
★ You are viewing this record
Sibling
Jennie Brock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Brock
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nermus Brock
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Denser Brock
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Brock
Sibling · 1940 · age 2
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 — Bell-County, Kentucky
Open full size
1940 US Federal Census — Bell-County, Kentucky
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01279-00428)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John D. Payne | 12 | Grandson | — | Kentucky |
| 42 | Louie C. Howard | 2 | Granddaughter | — | Kentucky |
| 43 | Nermus Brock | 36 | Head | Laborer | Kentucky |
| 44 | Mary Brock | 21 | Wife | — | Kentucky |
| 45 | Charlie Brock | 69 | Cousin | — | Kentucky |
| 46 | Rufus Brock | 13 | Brother-in-law | — | Kentucky |
| 47 | Carl Nettelton | 41 | Head | Laborer | Kentucky |
| 48 | Susie Nettelton | 39 | Wife | — | Kentucky |
| 49 | Donald Nettelton | 9 | Son | — | Ohio |
| 50 | Fred D. Wilson | 25 | Head | Coal Loader | Tennessee |
| 51 | Lillie Mae Wilson | 20 | Wife | — | Kentucky |
| 52 | James H. Wilson | 2 | Son | — | Kentucky |
| 54 | Milburn Johnson | 28 | Head | Coal Loader | Virginia |
| 55 | Virgie Johnson | 24 | Wife | — | Kentucky |
| 56 | Wanda Fay Johnson | 5 | Daughter | — | Kentucky |
| 57 | Jack Johnson | 3 | Son | — | Kentucky |
| 58 | Glenda Johnson | 0 | Daughter | — | Kentucky |
| 59 | William Moore | 46 | Head | Coal Loader | Kentucky |
| 60 | Lula Moore | 46 | Wife | — | Virginia |
| 61 | Jack Moore | 18 | Son | Coal Loader | Kentucky |
| 62 | Louise Moore | 15 | Daughter | — | Kentucky |
| 63 | Pauline Moore | 12 | Daughter | — | Kentucky |
| 64 | J. B. Moore | 8 | Son | — | Kentucky |
| 65 | William H. Moore | 5 | Son | — | Kentucky |
| 66 | Elijah Brock | 45 | Head | — | Kentucky |
| 67 | Laura Brock | 39 | Wife | — | Kentucky |
| 68 | Mary Brock THIS PERSON | 18 | Daughter | — | Kentucky |
| 69 | Denser Brock | 15 | Son | — | Kentucky |
| 70 | Nermus Brock | 13 | Son | — | Kentucky |
| 71 | Hazel Brock | 10 | Daughter | — | Kentucky |
| 72 | Jennie Brock | 5 | Daughter | — | Kentucky |
| 73 | Shirley C. Brock | 2 | Daughter | — | Kentucky |
| 74 | America Howard | 53 | Head | — | Kentucky |
| 75 | Martin Howard | 25 | Son | Laborer | Kentucky |
| 76 | Carl Nunn | 14 | Grandson | — | Kentucky |
| 77 | Lee Belcher | 38 | Head | Manager | Kentucky |
| 78 | Maud Belcher | 33 | Wife | Waitress | Kentucky |
| 79 | Carl B. Farley | 16 | Stepson | — | Kentucky |
| 80 | Raymond Farley | 13 | Stepson | — | 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)