What does Santiago mean?
A contraction of 'Sant Yago' — Saint James. Yago (also Iago) is the old Spanish form of Jacobo/James, from the Hebrew Ya'aqov (Jacob). The name honors Santiago the Apostle, patron saint of Spain, whose shrine is at Santiago de Compostela.
What does Alejandro mean?
The Spanish form of Alexander, from the Greek Alexandros, combining alexein 'to defend, protect' and aner/andros 'man'. Carried through history by Alexander the Great and later by saints and kings.