Spanish surname

[cfdb]

I have 3 months to go until my son is born. We're using his fathers surname which is Spanish but we live in Wales so don't want anything Spanish for the first name, just something that compliments it. He likes really popular names that have a spanish equivalent whereas I think they're all too popular and want something that's not in the top 10 on every list compiled since year dot. ANY SUGGESTIONS?!?!?!?!

Lewis
Oscar
Albert

Lucas
Rafael
Gabriel
Joel
Reuben
Jonathan
Alexander
David
Edward
Isaac
Samuel

Phillip, Alexander, Frederick, Louis, Jonathan, Peter, Benedict, Theodore, Timothy, Marcus, Matthew, Luke, James, Ferdinand?

Interesting, you need a 'Spanglish' name! I love Iago, the Spanish form of James ...and Valentin. Anyway, back to OP, some more suggestions for you:

Alexander ^
Arthur
Cassian
Christian
Damian
George
Inigo
Leon
Marcus
Max (Maximus, Maxwell, Maxston, Maximilian etc...)
Nathanael
Roman
Sebastian
Solomon
Theodore (Theo)

Without having an idea of the surname is difficult to advise...