Start of the Sumuroy Revolt: Filipinos in Northern Samar led by Agustin Sumuroy revolt against Spanish colonial authorities.
During the Spanish colonial period in the Philippines, 1521–1898, there were several revolts against the Spanish colonial government by indigenous Moro, Lumad, Indians, Chinese (Sangleys), and Insulares (Filipinos of full or near full Spanish descent), often with the goal of re-establishing the rights and powers that had traditionally belonged to Lumad Timueys, Maginoo Rajah, and Moro Datus. Some revolts stemmed from land problems and this was largely the cause of the insurrections that transpired in the agricultural provinces of Batangas, Bulacan, Cavite, and Laguna. Natives also rebelled over unjust taxation and forced labor.
Most of these revolts failed because the majority of the local population sided up with the well-armed colonial government, and to fight with Spanish as foot soldiers to put down the revolts.In Mindanao and Sulu, a continuous fight for sovereignty was sustained by the Moro people and their allies for the whole duration of Spanish conquest and rule.