(The present-day province of La Union was still part of Pangasinan and Ilocos). At the battle of Agno, he faced on March 1, 1763 the Spanish forces under the command of Alfonso de Arayat, who led a composite troop of Spanish soldiers and Indios loyal to Spain. Arayat withdrew after losing much of his Indio loyalists.Pangasinenses took over all official functions and controlled the province up to the Agno River, the natural boundary between Pangasinan and neighboring Pampanga in the south.
Alfonso de Arayat
Indio loyalists.Pangasinenses