Diego de Salcedo, a Spanish army officer during the Eighty Years' War, was the Governor-General of the Philippines from 1663 to 1668.

In 1665, Salcedo heard of the existence of gold mines in the Cordilleras, an area dominated by people called ygolotes.

So, Salcedo formed an expedition of around 100 men led by Admiral Pedro Duran de Monforte to go Christianize the people in the area and excavate the gold at the same time.

[6] Mexican convicts were usually shipped to the Philippines to serve involuntary military service for the Spanish army in the archipelago.

Salcedo raised 100,000 pesos in order to acquire real soldiers for the Spanish in the Philippines.

Salcedo was caught immediately and Juan Manuel de la Peña Bonifaz succeeded him.