Mine is my real name. Not very clever, even less once you know the history of the name.
In the beginning of the XX the basque nationalist leader, Sabino Arana, realized that most of names in Basque country were Spanish or at least with latin roots (Priest in basque country were only christening under these naming conventions), he decided to write a basque naming convention based on bible characters. He unilaterally decided that Jesus would be Josu onwards.
I always have wondered why he didn't change his name to Sabin, which sounds clearly less Spaniard than Sabino.