A monument of the blood compact in Tagbilaran City.
Datu Sikatuna was the Datu (lord) in the island of Bohol in the Philippines. His real name was "Katuna" but "Si" was added to his name as this is a nominative marker for a Filipino. He made a blood compact ("Sanduguan") and alliance with the Spanish explorer Miguel López de Legazpi on March 16, 1565 near the modern town of Loay.
There is a monument commemorating this pact called The Sandugo Blood Compact Site, which is located in the Bohol district of Tagbilaran City.