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Mary Brock — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Harlan-County, Kentucky

Our Model Tree links this Mary Brock across the 1930 and 1940 US Censuses in Harlan-County, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.

Age 13 b. ~1927 Female Daughter Born: Kentucky Single

1940 Census Record Details

Census Year1940
LocationHarlan-County, Kentucky
SurnameBrock
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age13
Marital StatusSingle
BirthplaceKentucky
1935 Residence (City)Magisterial Dist. 1
1935 Residence (County)Harlan
Additional Details
Highest GradeNo 4
1935 ResidenceSame place
Birth StateKentucky
Birth CountryUnited States
Birthplace (normalized)kentucky
Township / WardMagisterial Dist 1
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.

8 people recorded at the same address in the 1940 census.

Name Relation to head Relative to Mary Age Birth yr
Virgil Brock Head — 40 ~1900
Ruth Brock Daughter — 18 ~1922
Richard Brock Son — 11 ~1929
Della Brock Spouse — 38 ~1902
James Brock Son — 5 ~1935
Mary Brock Daughter — 13 ~1927
W Brock Son — 8 ~1932
Billy Brock Daughter — 9 ~1931

Census Appearances

1930
Harlan, Kentucky
Daughter, age 2
Harlan, Kentucky · implied b. ~1928 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Brock
Given Name Mary H.
Relationship to Head Daughter
Sex F
Color / Race White
Age 2
Marital Status Single
Birthplace Kentucky
Father's Birthplace Kentucky
Mother's Birthplace Kentucky
Birth State Kentucky
Birth Country United States
Birthplace (normalized) kentucky
1940
Harlan-County, Kentucky
Daughter, age 13
Harlan-County, Kentucky · implied b. ~1927 — 8 household members
Surname Brock
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 13
Marital Status Single
Birthplace Kentucky
1935 Residence (City) Magisterial Dist. 1
1935 Residence (County) Harlan
Highest Grade No 4
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.
Linked across censuses
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 13 · b. ~1927 · Kentucky
★ You are viewing this record
Sibling
James Brock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Brock
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
W Brock
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Brock
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Brock
Sibling · 1940 · age 11
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 — Harlan-County, Kentucky Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01313-00440)

Line Name Age Relation Occupation Birthplace
1 Milford Dugger 36 Head Load Coal Kentucky
2 Rosie Dugger 38 Wife 0 Kentucky
3 Shirley Dugger 15 Daughter 0 Kentucky
4 Herbert Dugger 20 Son 0 Kentucky
5 Edwin Turner 20 Step son Load Coal Kentucky
6 Mildred Turner 16 Step daughter 0 Kentucky
7 James Turner 40 Head Motorman Kentucky
8 Leona Turner 38 Wife 0 Kentucky
9 Georgia Turner 17 Daughter New Worker Kentucky
10 James Jr. Turner 15 Son New Worker Kentucky
11 Juanetta Turner 12 Daughter — Kentucky
12 Onna Lee Turner 10 Daughter — Kentucky
13 Virgil Brock 40 Head Carpenter Kentucky
14 Della Brock 38 Wife 0 Tennessee
15 Ruth Brock 18 Daughter New Worker Kentucky
16 Mary Brock THIS PERSON 13 Daughter — Kentucky
17 Richard Brock 11 Son — Kentucky
18 Billy Jean Brock 9 Daughter — Kentucky
19 W. A. Brock 8 Son — Kentucky
20 James Hershell Brock 5 Son — Kentucky
21 Grady Simpkins 31 Head Loads Coal Kentucky
22 Florence Simpkins 26 Wife 0 Kentucky
23 Robert Harris 52 Head Carpenter Kentucky
24 Jeremy Harris 76 Wife 0 Kentucky
25 A. J. Harris 78 Head 0 North Carolina
26 Stella Harris 76 Wife 0 Virginia
27 Hiram Harris 34 Son Laborer Kentucky
28 Maggie Parker 65 Head 0 Tennessee
29 Bud Lawson 44 Brother Loads Coal Kentucky
30 Monroe Collins 37 Head Loads Coal Kentucky
31 Frances Collins 32 Wife 0 Kentucky
32 Shelby Brock 43 Head Conveyor Work Kentucky
33 Ethel Brock 40 Wife 0 Kentucky
34 Elmer Brock 19 Son Conveyor Work Kentucky
35 Lillian Brock 17 Daughter New Worker Kentucky
36 Kathleen Brock 16 Daughter New Worker Kentucky
37 Juanitta Brock 13 Daughter — Kentucky
38 Martha Lee Brock 10 Daughter — Kentucky
39 Nora Brock 4 Daughter — Kentucky
40 Bobby Wayne Brock 1 Son — Kentucky

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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)

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