Ruy López de Villalobos (Spanish pronunciation: [ruj ˈlopeθ ðe βiʝaˈloβos]; ca. 1500 – April 4, 1544) was a Spanish explorer who sailed the Pacific from Mexico to establish a permanent foothold for Spain in the East Indies, which was near the Line of Demarcation between Spain and Portugal according to the Treaty of Zaragoza in 1529. Villalobos gave the Philippines their name, after calling them Las Islas Filipinas in honor of Philip of Austria, the Prince of Asturias at the time, who later became Philip II of Spain.