Saint James. (The alternate view is that the name Iago was a forerunner to Diego or "Douglas". In this view, the translation would be Saint Douglas.)
Santiago is a male name very common.
Saint James
Santiago Mirabent's birth name is Santiago Mirabent Montao.
Santiago Arrieta's birth name is Santiago Donado.
Benito Santiago's birth name is Benito Rivera Santiago.
Santiago do Rego's birth name is Santiago Manuel do Rego.
Santiago Tupper's birth name is Santiago Tupper Jaramillo.
Santiago Stieben's birth name is Santiago Lautaro Stieben.
Santiago Pedrero's birth name is Santiago Pablo Pedrero.
Dino Santiago's birth name is Geraldino Santiago Rojas.
Jessica Santiago's birth name is Jessica Joan Santiago.
Raymart Santiago's birth name is Raymond Martin Santiago.