wow that sounds eerily famliar.
My great grandfather Francisco del Rio Fernandez emigrated from Spain to Cuba, and then to Panama, and ended up El Salvador in the 1920s.
I just stumbled onto this board by chance so I'll find out more. But wow. There just might be something, considering the del Rio and Fernandez marriage.
My great grandfather always said though that his father's name was Francisco Eugenio, for which one of my uncles was named.