Just wanted to say thanks for your response. Unfortunately I havent found a connection in the family tree of the names you gave, though that doesn't mean we arent related. Considering that I know almost all of my family leading up to my great grandfather Cecilio DeLeon the thing I'm trying to focus on is how far back I can go. I still cant get passed finding anything on the DeLeon lineage before 1900's (for puerto Rico specifically that is). By any chance do you know your great grandfathers name?
P.S. I am in awe at how many brothers and sister your Dad has.