1565 works

The Legazpi-Sikatuna Blood Compact, or Sandugo (Spanish: Pacto de Sangre), was a blood compact, performed on the island of Bohol in the Philippines, between the Spanish explorer Miguel López de Legazpi and Datu Sikatuna, chieftain of Bohol, on March 16, 1565, to seal their friendship following tribal tradition. This is considered the first treaty of friendship between the Spaniards and Filipinos. Sandugo is a Visayan word meaning "one blood".