He was the son (out of wedlock) of Johnse Hatfield and Missouri Runyon.
He was a grandson of Devil Anse Hatfield.
Missouri Also previous had a son (Wayne Mccoy 1878-1929) by Johnse enemy Tolbert Mccoy.
Floyd Hatfield
Death • West Virginia Deaths, 1804-1999
Name Floyd Hatfield
Marital Status Married
Death Date 05 Mar 1946
Death Date 05 Mar 1946
Death Place Mingo, West Virginia
Father's Name Cap Johnas Hatfield
Mother's Name Missoruca Runyon
Spouse's Name Marie Lilka Hatfield
Source Reference County Records

Floyd Hatfield
Census • United States Census, 1900
Name Floyd Hatfield
Sex Male
Age 20
Event Date 1900
Event Place Lee district, Mingo, West Virginia, United States
Event Place (Original) ED 90 Lee district, Mingo, West Virginia, United States
Event Type Census
Marital Status Single
Race White
Relationship to Head of Household Stepson
Relationship Code Stepson
Sheet Letter B
Sheet Number 17
Birth Date Nov 1880
Birthplace Kentucky
Father's Birthplace West Virginia
Mother's Birthplace Kentucky
Floyd Hatfield's Parents and Siblings
Sha* S Butcher
Step-father
M
56
West Virginia
Name Sha* S Butcher
Sex Male
Age 56
Event Date 1900
Event Place Lee district, Mingo, West Virginia, United States
Event Place (Original) ED 90 Lee district, Mingo, West Virginia, United States
Event Type Census
Marital Status Married
Race White
Relationship to Head of Household Head
Relationship Code Head
Sheet Letter B
Sheet Number 17
Years Married 17
Birth Date May 1844
Birthplace West Virginia
Marriage Year (Estimated) 1883
Father's Birthplace West Virginia
Mother's Birthplace West Virginia
Missouri Butcher
Step-mother
F
35
Kentucky
Bettie Butcher
Sister
F
17
Kentucky
Esther Butcher
Sister
F
13
Kentucky
?Enna Butcher
Brother
M
10
Kentucky
Pearly Butcher
Sister
F
7
Kentucky
Fannie Butcher
Sister
F
1
West Virginia
Wayne Mccoy
Step-son
M
22
Kentucky