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Jack Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kemper-County, Mississippi
Our Model Tree links this Jack Martin across the 1930 and 1940 US Censuses in Kemper-County, Mississippi (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 5-person household.
Age 14
b. ~1926
Male
Son
Born: Mississippi
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kemper-County, Mississippi |
| Surname | Martin |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 1 |
| 1935 Residence (County) | Yazoo |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Township / Ward | Beat 1 |
| Est. Birth Year | ~1926 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Nolan Martin | Head | — | 60 | ~1880 |
| Pauline Martin | Daughter | — | 12 | ~1928 |
| Josephine Martin | Spouse | — | 59 | ~1881 |
| Jack Martin | Son | — | 14 | ~1926 |
| Mable Martin | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Kemper, Mississippi
Son, age 2
Kemper, Mississippi · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Kemper-County, Mississippi
Son, age 14
Kemper-County, Mississippi · implied b. ~1926 — 5 household members
| Surname | Martin |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 1 |
| 1935 Residence (County) | Yazoo |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 Jack Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Martin
Son · 1940 · age 14 · b. ~1926 · Mississippi
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Sibling
Pauline Martin
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mable Martin
Sibling · 1940 · age 17
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 — Kemper-County, Mississippi
Open full size
1940 US Federal Census — Kemper-County, Mississippi
Page Contents
12 people indexed on this census page (nara:1940:m-t0627-02037-00114)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nolan J. Martin | 60 | Head | Merchant | Mississippi |
| 2 | Josephine Martin | 59 | Wife | — | Mississippi |
| 3 | Mable Martin | 17 | Daughter | — | Mississippi |
| 4 | Jack Martin THIS PERSON | 14 | Son | — | Mississippi |
| 5 | Pauline Martin | 12 | Daughter | — | Mississippi |
| 6 | Sammie Stewart | 32 | Head | Laborer | Mississippi |
| 7 | Bertha Stewart | 20 | Wife | — | Mississippi |
| 8 | Mary Stewart | 15 | Daughter | — | Mississippi |
| 9 | Henry Stewart | 12 | Son | — | Mississippi |
| 10 | Betty Stewart | 10 | Daughter | — | Mississippi |
| 11 | George Stewart | 8 | Son | — | Mississippi |
| 12 | Callie M. Stewart | 1 | Daughter | — | Mississippi |
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)