WM
William Mccoy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Ohio
Our Model Tree links this William Mccoy across the 1930 and 1940 US Censuses in Washington-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Ohio |
| Surname | McCoy |
| Given Name | William L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Decatur Twp |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Decatur Twp |
| Est. Birth Year | ~1930 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Paul Mccoy | Son | — | 15 | ~1925 |
| William Mccoy | Son | — | 10 | ~1930 |
| Betty Mccoy | Daughter | — | 13 | ~1927 |
| Beatrice Mccoy | Spouse | — | 53 | ~1887 |
| Hershel Mccoy | Son | — | 18 | ~1922 |
| Gata Mccoy | Head | — | 56 | ~1884 |
| Mary Mccoy | Daughter | — | 21 | ~1919 |
| Don Mccoy | Son | — | 16 | ~1924 |
| Jack Mccoy | Son | — | 23 | ~1917 |
Census Appearances
1930
Washington, Ohio
Son, age 1
Washington, Ohio · implied b. ~1929 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | William L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | West Virginia |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Washington-County, Ohio
Son, age 10
Washington-County, Ohio · implied b. ~1930 — 9 household members
| Surname | McCoy |
| Given Name | William L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Decatur Twp |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 William Mccoy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mccoy
Son · 1940 · age 10 · b. ~1930 · Ohio
★ You are viewing this record
Sibling
Mary Mccoy
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Mccoy
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mccoy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Don Mccoy
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hershel Mccoy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Mccoy
Sibling · 1940 · age 13
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 — Washington-County, Ohio
Open full size
1940 US Federal Census — Washington-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03165-00227)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Merritt D Misty | 44 | Head | House Keeper | Ohio |
| 2 | Hellen S Misty | 12 | Wife | — | Ohio |
| 3 | Walter S Ladd | 52 | Head | Farming | Ohio |
| 4 | Hattie B Ladd | 57 | Wife | House Keeper | West Virginia |
| 5 | Hersel C Ladd | 8 | Son | — | — |
| 6 | Harriett R Ladd | 87 | Mother | — | Ohio |
| 7 | Martin Welch | 80 | Head | — | Ohio |
| 8 | Zenia Welch | 66 | Wife | House Keeper | Ohio |
| 9 | Jess A Welch | 29 | Son | Farming | Ohio |
| 10 | Geneva Welch | 26 | Daughter | Nurse | Ohio |
| 11 | Edwin R Caskey | 60 | Head | Farming | Ohio |
| 12 | Hattie Caskey | 60 | Wife | House Keeper | West Virginia |
| 13 | Gata J Mccoy | 56 | Head | Farming | West Virginia |
| 14 | Beatrice J Mccoy | 53 | Wife | House Keeper | West Virginia |
| 15 | Jack Mccoy | 23 | Son | New Worker | West Virginia |
| 16 | Mary E Mccoy | 21 | Daughter | Nursing | Ohio |
| 17 | Hershel R Mccoy | 18 | Son | — | Ohio |
| 18 | Don D Mccoy | 16 | Son | — | Ohio |
| 19 | Paul H Mccoy | 15 | Son | — | Ohio |
| 20 | Betty V Mccoy | 13 | Daughter | — | Ohio |
| 21 | William L Mccoy THIS PERSON | 10 | Son | — | Ohio |
| 22 | John Jr. Welch | 36 | Head | Farming | Ohio |
| 23 | Gilbert Taylor | 25 | Partner | Sawmill Worker | Ohio |
| 24 | Beola P Taylor | 23 | Wife | House Keeper | Indiana |
| 25 | Virgil D Welch | 30 | Head | Laborer | Ohio |
| 26 | Ethel E Welch | 26 | Wife | House Keeper | Ohio |
| 27 | Pearl M Smith | 30 | Head | Gutter | West Virginia |
| 28 | Earnestine Smith | 20 | Wife | House Keeper | West Virginia |
| 29 | Melvin J Smith | 16 | Son | School | West Virginia |
| 30 | Effie Schrader | 46 | Head | House Keeper | Ohio |
| 31 | Willis V Schrader | 49 | Husband | — | Ohio |
| 32 | Harry W Schrader | 19 | Son | School | Ohio |
| 33 | Laura J Schrader | 13 | Daughter | School | Ohio |
| 34 | Otis Lee Scott | 34 | Head | — | West Virginia |
| 35 | Helen Scott | 37 | Wife | — | Ohio |
| 36 | Addie S Dobbins | 60 | Head | House Keeper | Ohio |
| 37 | Benjamin Powell | 58 | Head | Laborer | West Virginia |
| 38 | Eva Powell | 56 | Wife | House Keeper | West Virginia |
| 39 | William H Keife | 45 | Head | Carpenter | West Virginia |
| 40 | Stella M Keife | 45 | Wife | House Keeper | 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)