By the account of Antonio Pigafetta, the fleet of explorers led by Ferdinand Magellan caught sight of Zamal (Samar) on March 16, 1521. However, because Zamal’s geography hindered anchorage, the fleet transferred to a small island south of Yunagan called Suluan, which is under the jurisdiction of Guiuan, Eastern Samar.

The expedition then moved to the uninhabited island of Humunu (Homonhon) where they were approached by an unnamed chieftain who, upon witnessing their dire condition, gave his armada nourishment. In return, Magellan presented gifts to the ruler.