His marriage certificate and the 1930 Census have his birthplace as New York, his death certificate has it as Spain. The 1930 census has his parents POB as Spain.
1930 United States Federal Census
Name: Joe Sampson
Gender: Male
Birth Year: abt 1899
Birthplace: New York
Race: White
Home in 1930: War, McDowell, West Virginia
Marital Status: Married
Relation to Head of House: Head
Spouse's Name: Martha Sampson
Father's Birthplace: Spain
Mother's Birthplace: Spain
Household Members:
Joe Sampson 31
Martha Sampson 31
Raleigh Christian 20
Louise Christian 22