Datu Sikatuna was the chieftain of Bohol, who made a blood compact and allianced with the Spanish conquistador, Miguel López de Legazpi in March 16, 1565. His real name is Katuna but is recorded as Sikatuna. 'Si' is a nominative marker in Filipino.

Filipino Datus, Rajas and Sultans | History of the Philippines | People from Bohol | Paramilitary Filipinos | Datu Sikatuna | Datu Sikatuna