JK
John Kirk — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Martin-County, Kentucky
Our Model Tree links this John Kirk across the 1930 and 1940 US Censuses in Martin-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Martin-County, Kentucky |
| Surname | Kirk |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. 2 Lick Branch |
| 1935 Residence (County) | Martin |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Laborer |
| Township / Ward | Mag Dist 2 Lick Branch |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Leverette Kirk | Son | — | 15 | ~1925 |
| John Kirk | Son | — | 17 | ~1923 |
| Nellie Kirk | Spouse | — | 45 | ~1895 |
| Lillie Kirk | Daughter | — | 10 | ~1930 |
| Lorma Kirk | Daughter | — | 19 | ~1921 |
| Arthur Kirk | Head | — | 45 | ~1895 |
| Madine Kirk | Daughter | — | 7 | ~1933 |
| Albert Kirk | Son | — | 6 | ~1934 |
Census Appearances
1930
Martin, Kentucky
Son, age 7
Martin, Kentucky · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirk |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Martin-County, Kentucky
Son, age 17
Martin-County, Kentucky · implied b. ~1923 — 8 household members
| Surname | Kirk |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. 2 Lick Branch |
| 1935 Residence (County) | Martin |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 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.
Our Model Tree links John Kirk across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kirk
Son · 1940 · age 17 · b. ~1923 · Kentucky
★ You are viewing this record
Sibling
Lillie Kirk
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Kirk
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madine Kirk
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leverette Kirk
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorma Kirk
Sibling · 1940 · age 19
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 — Martin-County, Kentucky
Open full size
1940 US Federal Census — Martin-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01339-00538)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dave Harrial | 56 | Head | Farmer | West Virginia |
| 2 | Nannie Harrial | 52 | Wife | — | West Virginia |
| 3 | Georgia Harrial | 19 | Daughter | Seamstress | Kentucky |
| 4 | Colmer Harrial | 16 | Son | Laborer | Kentucky |
| 5 | Tommie Dalton | 67 | Head | Farmer | Kentucky |
| 6 | Dollie Dalton | 57 | Wife | — | Virginia |
| 7 | James Dalton | 24 | Son | Laborer | Kentucky |
| 8 | Henry Dalton | 21 | Son | Laborer | Kentucky |
| 9 | Nannie Smith | 28 | Daughter | Housekeeper | Kentucky |
| 10 | Betty Smith | 5 | Granddaughter | — | Kentucky |
| 11 | Buddy Smith | 3 | Grandson | — | Kentucky |
| 12 | Beatrice Smith | 2 | Daughter | — | Kentucky |
| 13 | Harrison Dalton | 50 | Head | Farmer | Kentucky |
| 14 | Kathrine Dalton | 40 | Wife | — | Kentucky |
| 15 | Eugene Dalton | 16 | Son | Laborer | Kentucky |
| 16 | Golda Dalton | 15 | Daughter | — | Kentucky |
| 17 | Verna Dalton | 13 | Daughter | — | Kentucky |
| 18 | Monroe Dalton | 12 | Son | — | Kentucky |
| 19 | George W. Dalton | 10 | Son | — | Kentucky |
| 20 | Lizzie Dalton | 9 | Daughter | — | Kentucky |
| 21 | Jennie Dalton | 5 | Daughter | — | Kentucky |
| 22 | Oma Dalton | 4 | Daughter | — | Kentucky |
| 23 | Lillie Dalton | 2 | Daughter | — | Kentucky |
| 24 | Arthur Kirk | 45 | Head | Farmer | Kentucky |
| 25 | Nellie Kirk | 45 | Wife | — | Kentucky |
| 26 | Lorma Kirk | 19 | Daughter | Housekeeper | Kentucky |
| 27 | John Kirk THIS PERSON | 17 | Son | Laborer | Kentucky |
| 28 | Leverette Kirk | 15 | Son | — | Kentucky |
| 29 | Lillie Kirk | 10 | Daughter | — | Kentucky |
| 30 | Madine Kirk | 7 | Daughter | — | Kentucky |
| 31 | Albert Kirk | 6 | Son | — | Kentucky |
| 32 | Floyd Kirk | 22 | Head | Farmer | Kentucky |
| 33 | Clementine Kirk | 18 | Wife | — | Kentucky |
| 34 | Frank Cox | 25 | Head | Farmer | West Virginia |
| 35 | Norma Cox | 25 | Wife | — | Kentucky |
| 36 | Orene Cox | 8 | Daughter | — | Kentucky |
| 37 | Clementine Cox | 5 | Daughter | — | Kentucky |
| 38 | Ben Fletcher | 24 | Head | Farmer | Kentucky |
| 39 | Myrtle Fletcher | 20 | Wife | — | Kentucky |
| 40 | Ben Jr. Fletcher | 1 | Son | — | Kentucky |
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)