On November 14, 1875, Gregorio H. del Pilar was born in Bulacan, Bulacan. Marcelo H. del Pilar, which was his uncle thought him lessons of courage and patriotism. He then went to Manila to continue his studies.
Gregorio served as his uncle’s messenger for anti-colonial activities. He was also a distributor of the publications and writings of his uncle – Marcelo H. del Pilar. Because of this work, Gregorio acquired a lot of friends and connections back in Manila. The revolution happened in August 1896, and Gregorio courageously joined this movement.