JM
Jack Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bell-County, Kentucky
Our Model Tree links this Jack Martin across the 1930 and 1940 US Censuses in Bell-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bell-County, Kentucky |
| Surname | Martin |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Harlan |
| Additional Details | |
| Highest Grade | Yes 5 |
| 1935 Residence | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Insull |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Ora Martin | Head | — | 39 | ~1901 |
| Eugene Martin | Son | — | 10 | ~1930 |
| Meda Martin | Spouse | — | 39 | ~1901 |
| Betty Martin | Daughter | — | 9 | ~1931 |
| Faye Martin | Daughter | — | 7 | ~1933 |
| Jack Martin | Son | — | 13 | ~1927 |
| Michael York | Other | — | 31 | ~1909 |
Census Appearances
1930
Harlan, Kentucky
Son, age 3
Harlan, Kentucky · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| 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
Son, age 13
Bell-County, Kentucky · implied b. ~1927 — 7 household members
| Surname | Martin |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Harlan |
| Highest Grade | Yes 5 |
| 1935 Residence | Kentucky |
| 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 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 13 · b. ~1927 · Kentucky
★ You are viewing this record
Sibling
Eugene Martin
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Faye Martin
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Martin
Sibling · 1940 · age 9
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
40 people indexed on this census page (nara:1940:m-t0627-01279-00415)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Grant Scott | 34 | Lodger | Laborer | Kentucky |
| 2 | Ora Martin | 39 | Head | Coal Loader | Kentucky |
| 3 | Meda Martin | 39 | Wife | — | Kentucky |
| 4 | Jack Martin THIS PERSON | 13 | Son | — | Kentucky |
| 5 | Eugene Martin | 10 | Son | — | Kentucky |
| 6 | Betty Martin | 9 | Daughter | — | Kentucky |
| 7 | Faye Martin | 7 | Daughter | — | Kentucky |
| 8 | Michael York | 31 | Lodger | Coal Loader | Kentucky |
| 9 | Sherman Ellis | 26 | Head | Laborer | Kentucky |
| 10 | Myrtle Ellis | 18 | Wife | — | Tennessee |
| 11 | James C. Ellis | 1 | Son | — | Kentucky |
| 12 | William Main | 34 | Head | Laborer | Kentucky |
| 13 | Blanche Main | 29 | Wife | — | Tennessee |
| 14 | Mantha Oliver | 18 | Maid | Maid | Georgia |
| 15 | Bill Cunningham | 50 | Head | Miner | Tennessee |
| 16 | Leona Cunningham | 45 | Wife | — | Kentucky |
| 17 | William Holly Cunningham | 21 | Son | — | Kentucky |
| 18 | Raymond Cunningham | 18 | Head | Miner | Kentucky |
| 19 | Pauline Cunningham | 18 | Wife | — | Kentucky |
| 20 | Leamon Mckinney | 23 | Head | Miner | Kentucky |
| 21 | Thelma Mckinney | 21 | Wife | — | Kentucky |
| 22 | Charles Good | 40 | Head | Coal Loader | Kentucky |
| 23 | Rosetta Good | 21 | Wife | — | Kentucky |
| 24 | Willie Mason | 21 | Lodger | Coal Loader | Kentucky |
| 25 | Oscar Jones | 24 | Lodger | Coal Loader | Kentucky |
| 26 | J. H. Fields | 54 | Head | Laborer | Kentucky |
| 27 | Alice Fields | 49 | Wife | — | Kentucky |
| 28 | Henry Jump | 24 | Head | Coal Loader | Kentucky |
| 29 | Verla Jump | 20 | Wife | — | Kentucky |
| 30 | Henry Edwin Jump | 3 | Son | — | Kentucky |
| 31 | Bessie Ealy | 47 | Mother-in-law | — | Kentucky |
| 32 | John Jump | 26 | Head | Coal Loader | Kentucky |
| 33 | Myrtle Jump | 23 | Wife | — | Kentucky |
| 34 | J. W. Jump | 2 | Son | — | Kentucky |
| 35 | Hale Ellis | 25 | Brother-in-law | Laborer | Kentucky |
| 36 | Earl Howard | 23 | Head | Coal Loader | Kentucky |
| 37 | Nina Howard | 19 | Wife | — | Kentucky |
| 38 | Larry Howard | 1 | Son | — | Kentucky |
| 39 | C. E. Halstead | 49 | Head | Foreman | West Virginia |
| 40 | Anna Halstead | 50 | Wife | — | West Virginia |
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)