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Mary Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Van-Buren-County, Tennessee
Our Model Tree links this Mary Brock across the 1930 and 1940 US Censuses in Van-Buren-County, Tennessee (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 9-person household.
Age 17
b. ~1923
Female
Daughter
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Van-Buren-County, Tennessee |
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Davidson |
| Additional Details | |
| Class of Worker | NP |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Township / Ward | Spencer |
| Est. Birth Year | ~1923 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Seavillon Brock | Head | — | 44 | ~1896 |
| Sarah Brock | Daughter | — | 10 | ~1930 |
| Elizabeth Brock | Daughter | — | 8 | ~1932 |
| Seavillon Brock | Daughter | — | 12 | ~1928 |
| Riley Brock | Son | — | 14 | ~1926 |
| Samuel Brock | Son | — | 7 | ~1933 |
| James Brock | Son | — | 4 | ~1936 |
| John Brock | Son | — | 5 | ~1935 |
| Mary Brock | Daughter | — | 17 | ~1923 |
Census Appearances
1930
White, Tennessee
Daughter, age 7
White, Tennessee · implied b. ~1923 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Van-Buren-County, Tennessee
Daughter, age 17
Van-Buren-County, Tennessee · implied b. ~1923 — 9 household members
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Davidson |
| Class of Worker | NP |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 17 · b. ~1923 · Tennessee
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Sibling
James Brock
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Brock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Seavillon Brock
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Brock
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Brock
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Riley Brock
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Brock
Sibling · 1940 · age 7
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 — Van-Buren-County, Tennessee
Open full size
1940 US Federal Census — Van-Buren-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03942-00375)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred E. Hale | 2 | Son | — | Tennessee |
| 2 | John D. Morris | 49 | Head | Laborer | Tennessee |
| 3 | Avie Morris | 36 | Wife | — | Tennessee |
| 4 | Johnie R. Morris | 10 | Son | — | Tennessee |
| 5 | Hazel Morris | 7 | Daughter | — | Tennessee |
| 6 | Brady Morris | 3 | Son | — | Tennessee |
| 7 | Henry A. Russell | 71 | M-in-law | Timber Cutter | Alabama |
| 8 | Delphia Russell | 15 | Daughter | — | Tennessee |
| 9 | Henry W. Mcbride | 43 | Head | Laborer | Tennessee |
| 10 | Nettie Mcbride | 42 | Wife | — | Tennessee |
| 11 | Robert Mcbride | 22 | Son | Fireman | Tennessee |
| 12 | Berta Mcbride | 19 | Daughter | — | Tennessee |
| 13 | Ersie Mcbride | 16 | Daughter | — | Tennessee |
| 14 | Doyle F. Mcbride | 11 | Son | — | Tennessee |
| 15 | Jewell Dean Mcbride | 6 | Daughter | — | Tennessee |
| 16 | Emma L. Mcbride | 4 | Daughter | — | Tennessee |
| 17 | Drew R. Simmons | 60 | Head | Laborer | Tennessee |
| 18 | Nettie Simmons | 51 | Wife | — | Tennessee |
| 19 | L. D. Simmons | 22 | Son | Laborer | Tennessee |
| 20 | Mattie L. Simmons | 14 | Daughter | — | Tennessee |
| 21 | Silas Simmons | 22 | Son | Laborer | Tennessee |
| 22 | Mary Simmons | 21 | Daughter | — | Tennessee |
| 23 | Lousinda Black | 59 | Head | — | Tennessee |
| 24 | Archie Jr. Black | 16 | Son | — | Tennessee |
| 25 | Bill Hopkins | 32 | Son | Laborer | Tennessee |
| 26 | Julia Hopkins | 25 | Daughter | — | Tennessee |
| 27 | Ersie Hopkins | 9 | Daughter | — | Tennessee |
| 28 | James Hopkins | 5 | Son | — | Tennessee |
| 29 | Seavillon Brock | 44 | Head | — | Tennessee |
| 30 | Mary Brock THIS PERSON | 17 | Daughter | — | Tennessee |
| 31 | Riley L. Brock | 14 | Son | — | Tennessee |
| 32 | Seavillon Brock | 12 | Daughter | — | Tennessee |
| 33 | Sarah E. Brock | 10 | Daughter | — | Tennessee |
| 34 | Samuel Brock | 7 | Son | — | Tennessee |
| 35 | John Brock | 5 | Son | — | Tennessee |
| 36 | James Brock | 4 | Son | — | Tennessee |
| 37 | Elizabeth Brock | 8 | Daughter | — | Tennessee |
| 38 | Thomas Shockley | 44 | Head | Road Contractor | Tennessee |
| 39 | Emma Shockley | 39 | Wife | — | Tennessee |
| 40 | Audrey Shockley | 17 | Daughter | — | Tennessee |
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)