i dont know if we are related but my great-grandfathers name was Antonio Mourin, he lived in Spain, he married Carmen Fernandez, had 9 children one of them my grandfather Theodore Mourin who married Libia Riccer. They had a son Roberto Mourin and a daughter Analia Mourin. Analia Mourin married Enrique Calle and had me and my brother. That`s all the help i can give you, my other Mourin relatives live in Argentina, Cuba, Ecuador and the U.S.
Ricardo Calle Mourin