Hello John (and all who might read this message), I have the last name of Cancel on my father's side of the family from Puerto Rico too.I have just recently started my genealogy research and I have traced back very little.This is what I know....
My grandmother is Maria Cancel-Laracuente. (her father was:
My great-grandfather Juan Cancel-Prieto. (his mother was:
My great-great-grandmother Petrona Prieto.
Do any of these names match your research???Please advise.