RM
Robert Mccoy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Martin-County, Kentucky
Our Model Tree links this Robert Mccoy across the 1930 and 1940 US Censuses in Martin-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 12-person household.
Age 22
b. ~1918
Male
Son
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Martin-County, Kentucky |
| Surname | McCoy |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Martin |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 200 |
| Highest Grade | No 8 |
| 1935 Residence | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Miner |
| Township / Ward | Magisterial District 3 Warfield |
| Est. Birth Year | ~1918 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Ollie Mccoy | Daughter | — | 13 | ~1927 |
| Bill Mccoy | Son | — | 5 | ~1935 |
| Loueal Mccoy | Daughter | — | 17 | ~1923 |
| Evelyn Mccoy | Spouse | — | 43 | ~1897 |
| Floyd Mccoy | Son | — | 18 | ~1922 |
| Robert Mccoy | Son | — | 22 | ~1918 |
| Mary Mccoy | Daughter | — | 7 | ~1933 |
| Willard Perry | Other | — | 22 | ~1918 |
| Shirley Mccoy | Daughter | — | 15 | ~1925 |
| Ethel Mccoy | Daughter | — | 1 | ~1939 |
| Homer Mccoy | Son | — | 11 | ~1929 |
| Willie Mccoy | Head | — | 43 | ~1897 |
Census Appearances
1930
Martin, Kentucky
Son, age 11
Martin, Kentucky · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Martin-County, Kentucky
Son, age 22
Martin-County, Kentucky · implied b. ~1918 — 12 household members
| Surname | McCoy |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Martin |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 200 |
| Highest Grade | No 8 |
| 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 Robert Mccoy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Mccoy
Son · 1940 · age 22 · b. ~1918 · Kentucky
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Sibling
Mary Mccoy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ollie Mccoy
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loueal Mccoy
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Mccoy
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Mccoy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Floyd Mccoy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bill Mccoy
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Homer Mccoy
Sibling · 1940 · age 11
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-t0627-01339-00576)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Willie Mccoy | 43 | Head | Miner | West Vir |
| 2 | Evelyn Mccoy | 43 | Wife | — | Kentucky |
| 3 | Floyd Mccoy | 18 | Son | — | Kentucky |
| 4 | Shirley Mccoy | 15 | Daughter | — | Kentucky |
| 5 | Ollie Mccoy | 13 | Daughter | — | Kentucky |
| 6 | Homer Mccoy | 11 | Son | — | Kentucky |
| 7 | Mary Mccoy | 7 | Daughter | — | Kentucky |
| 8 | Bill Mccoy | 5 | Son | — | Kentucky |
| 9 | Ethel May Mccoy | 1 | Daughter | — | Kentucky |
| 10 | Robert Mccoy THIS PERSON | 22 | Son | Miner | Kentucky |
| 11 | Loueal Mccoy | 17 | Daughter | — | Kentucky |
| 12 | Willard Perry | 22 | Lodger | Miner | Kentucky |
| 13 | W. Burn Jude | 30 | Head | Stone Dresser | Kentucky |
| 14 | Alma Jude | 23 | Wife | — | Kentucky |
| 15 | Moses Clay Jude | 4 | Son | — | Kentucky |
| 16 | Roy Jude | 2 | Son | — | Kentucky |
| 17 | Isabell Jude | 49 | Head | — | Kentucky |
| 18 | Roscoe Jude | 27 | Son | Stone Dresser | Kentucky |
| 19 | Norma Ab Jude | 18 | Daughter | — | Kentucky |
| 20 | Jasper Blackburn | 41 | Head | Miner | Kentucky |
| 21 | Bertha Blackburn | 36 | Wife | — | Kentucky |
| 22 | Wilburn Blackburn | 19 | Son | — | Kentucky |
| 23 | Nanie Blackburn | 17 | Daughter | — | Kentucky |
| 24 | Elias Blackburn | 14 | Son | — | Kentucky |
| 25 | Ernest Blackburn | 10 | Son | — | Kentucky |
| 26 | Willie Blackburn | 8 | Son | — | Kentucky |
| 27 | Gracie Blackburn | 5 | Son | — | Kentucky |
| 28 | Homer Blackburn | 1 | Son | — | Kentucky |
| 29 | Shade Carter | 52 | Head | Laborer | Kentucky |
| 30 | Mary Carter | 35 | Wife | — | Kentucky |
| 31 | Rufus Carter | 16 | Son | — | Kentucky |
| 32 | Howard Carter | 10 | Son | — | Kentucky |
| 33 | Press Carter | 5 | Son | — | Kentucky |
| 34 | Ray Carter | 2 | Son | — | Kentucky |
| 35 | Will Maynard | 52 | Head | Laborer | Kentucky |
| 36 | Pat Maynard | 25 | Son | Laborer | Kentucky |
| 37 | Alice Maynard | 23 | Son | — | Kentucky |
| 38 | Lina Maynard | 18 | Daughter | — | Kentucky |
| 39 | Noah Maynard | 16 | Son | — | Kentucky |
| 40 | Jasper Maynard | 14 | 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)