The Sumuroy Revolt was a significant uprising against Spanish colonial rule, led by Agustin Sumuroy in the region of Northern Samar. The tensions between the local population and Spanish authorities had been escalating due to harsh policies, including the imposition of forced labor known as 'polos y servicios', which required Filipino males to work on government projects without compensation. This exploitation and a lack of respect for local customs and governance caused widespread discontent among the Filipinos.

In early June 1649, Agustin Sumuroy, a local leader and influential figure, galvanized the people of Northern Samar to rise against the colonial government. The revolt swiftly gained support from various communities across the region. The Spanish colonial authorities responded with force, trying to quell the uprising through military intervention. As the conflict escalated, the revolt led to several skirmishes and battles, showcasing the resilience and determination of the local population to fight for their rights and freedoms.

The Sumuroy Revolt lasted for a significant period, leading to significant disruptions to Spanish colonial operations in the area. Although eventually suppressed, the revolt demonstrated the underlying tensions present in the colony. It also highlighted the growing sense of Filipino identity and nationalism among the people, which would play a crucial role in subsequent movements for independence from foreign rule.