Spanish surnames?

Question

my friend told me that the Spanish surname Obregon is derived from the Irish surname O'Brien. I know he is wrong, but they do sound simmilar... could he be right?

Answer 1

that is false,

i  know what i  mean,  iam  mexican

Answer 2

no

Answer 3

I'm not sure but its very likely, both Ireland and Spain were inhabited by Celts before the time of the Romans, so they might have some words, and especially surnames that are similar to that of the Irish.

But I doubt it, because that influence was almost wiped out by the Latin and Arabic influences.

Answer 4

This is what www.ancestry.com has to say about the name,

Obregon Name Meaning and History

Spanish (Obregón): habitational name from Obregón in Santander province.

hope this helps.