When Peter Wells Contreras was born on 15 June 1913, his father, Pedro Redondo Contreras, was 41 and his mother, Rosa F Wells, was 27. He married Eva Verdugo on 10 February 1945, in Douglas, Cochise, Arizona, United States. He lived in Cananea, Cananea, Sonora, Mexico in 1930. He died on 14 June 2003, in Peoria, Maricopa, Arizona, United States, at the age of 89, and was buried in Calvary Cemetery, Douglas, Cochise, Arizona, United States.