I see that several trees on Ancestry are carrying the info that Salvetore aka Sam Difatta died 20 APR 1947in Louisiana. To me it looks like Salvatore DeFatta and Sam (Salvetore) Difatta are two different individuals. Your Sam Difatta died 28 JAN 1937; Trinidad.
Louisiana Staewide Death Index, 1900-1949
DOD: 20 APR 1947
Age: 67 years
Race: White or Mexican
NOTE: There is a spelling difference on surname; Year of death is 1947; estimated date of birth would be 1880.
Your Sam Difatta according to WWI Draft Registration Cards, 1917-1918
Name: Sam Difatta
County: Las Animas
DOB: 26 AUG 1888
Sam Difatta - Residence 223 East Colo Ave Trinidad; Age: 38; DOB Aug 26, 1888; Nearest Relative:
Mrs. Treasa Diffata.
1940 Census Trinidad, Las Animas, Colorado
ED 36-53 Page 14 223 Colorado
Difatta, Josephine|Dau|21|Divorced|CO|Housekeeper|Private Home
Difatta, Carmen|Dau|17|CO|Housekeeper|Private Home