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James Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Madrid-County, Missouri
Our Model Tree links this James Brock across the 1930 and 1940 US Censuses in New-Madrid-County, Missouri (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 9-person household.
Age 21
b. ~1919
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Madrid-County, Missouri |
| Surname | Brock |
| Given Name | James L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Le Sieur Twp |
| 1935 Residence (County) | New Madrid |
| Additional Details | |
| Occupation | Farming |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Farming |
| Township / Ward | Le Sieur Twp |
| Est. Birth Year | ~1919 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Fay Brock | Daughter | — | 6 | ~1934 |
| Millie Brock | Daughter | — | 11 | ~1929 |
| Add Brock | Spouse | — | 40 | ~1900 |
| James Brock | Son | — | 21 | ~1919 |
| Elvil Brock | Son | — | 3 | ~1937 |
| Bonnie Brock | Daughter | — | 1 | ~1939 |
| Henry Brock | Head | — | 49 | ~1891 |
| Snail Brock | Daughter | — | 15 | ~1925 |
| Henrietta Brock | Daughter | — | 9 | ~1931 |
Census Appearances
1930
New Madrid, …
Son, age 12
New Madrid, Missouri · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | James L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Texas |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
New-Madrid-County, Missouri
Son, age 21
New-Madrid-County, Missouri · implied b. ~1919 — 9 household members
| Surname | Brock |
| Given Name | James L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Le Sieur Twp |
| 1935 Residence (County) | New Madrid |
| Occupation | Farming |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 James Brock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Brock
Son · 1940 · age 21 · b. ~1919 · Missouri
★ You are viewing this record
Sibling
Henrietta Brock
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Millie Brock
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Snail Brock
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elvil Brock
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bonnie Brock
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fay Brock
Sibling · 1940 · age 6
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 — New-Madrid-County, Missouri
Open full size
1940 US Federal Census — New-Madrid-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02132-00579)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Christine V Young | 21 | Wife | — | Missouri |
| 2 | Jewell Young | 1 | Daughter | — | Missouri |
| 3 | Alice N Young | 0 | Daughter | — | Missouri |
| 4 | George W Davenport | 65 | Head | Farmer | Mississippi |
| 5 | Mary M Davenport | 65 | Wife | — | Louisiana |
| 6 | James Baimon | 13 | Nephew | — | Mississippi |
| 7 | Will Davis | 58 | Boarder | Laborer | Alabama |
| 8 | David L Mcbride | 42 | Head | Farming | Missouri |
| 9 | Lottie Mcbride | 37 | Wife | — | Tennessee |
| 10 | Cleatus Mcbride | 19 | Son | Laborer | Tennessee |
| 11 | David E Mcbride | 17 | Son | Farming | Tennessee |
| 12 | William Mcbride | 12 | Son | — | Arkansas |
| 13 | Geraldine Mcbride | 10 | Daughter | — | Tennessee |
| 14 | Donnal Mcbride | 7 | Daughter | — | Tennessee |
| 15 | Virginia Mathews | 26 | Lodger | Advertising | Mississippi |
| 16 | Grover Mccoy | 52 | Head | Laborer | Missouri |
| 17 | Henry D Brock | 49 | Head | Farming | Texas |
| 18 | Add V Brock | 40 | Wife | — | Illinois |
| 19 | James L Brock THIS PERSON | 21 | Son | Farming | Missouri |
| 20 | Snail M Brock | 15 | Daughter | — | Missouri |
| 21 | Millie H Brock | 11 | Daughter | — | Missouri |
| 22 | Henrietta Brock | 9 | Daughter | — | Missouri |
| 23 | Fay D Brock | 6 | Daughter | — | Missouri |
| 24 | Elvil Jr Brock | 3 | Son | — | Missouri |
| 25 | Bonnie J Brock | 1 | Daughter | — | Missouri |
| 26 | John W Blevins | 21 | Head | Laborer | Missouri |
| 27 | Ethel C Blevins | 17 | Wife | — | Missouri |
| 28 | Shirley Inez Blevins | 1 | Daughter | — | Missouri |
| 29 | Riley M Brown | 27 | Head | Laborer | Missouri |
| 30 | Helen L Brown | 22 | Wife | — | Missouri |
| 31 | Harold D Brown | 3 | Son | — | Missouri |
| 32 | Alma D Brown | 1 | Daughter | — | Missouri |
| 33 | Kelley Copeland | 26 | Head | Laborer | Missouri |
| 34 | Myrtle M Copeland | 18 | Wife | — | Missouri |
| 35 | Dorothy M Copeland | 2 | Daughter | — | Missouri |
| 36 | Marl L Copeland | 1 | Son | — | Missouri |
| 37 | Gerald J Comstock | 46 | Head | Painting | Alabama |
| 38 | Ellen B Comstock | 22 | Wife | — | Missouri |
| 39 | William J Comstock | 10 | Son | — | Missouri |
| 40 | Louis G Comstock | 4 | Son | — | Missouri |
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)