an , ▁had ▁also ▁ris en ▁in ▁revol t ▁as ▁in ▁other ▁parts ▁of ▁the ▁country . ▁Bul ac an ▁was ▁one ▁of ▁the ▁eight ▁provinces , ▁which ▁r al lied ▁behind ▁the ▁Kat ip un an ' s ▁call ▁for ▁an ▁all - out ▁ins urre ction ▁against ▁the ▁Spanish ▁occupation ▁in ▁the ▁late ▁ 1 9 th ▁century . ▁▁ ▁Marcel o ▁H . ▁Del ▁P ilar ▁( K up ang , ▁San ▁Nicolas , ▁Bul ak an ), ▁the ▁" Gre at ▁Pro pag and ist " ▁of ▁the ▁Philipp ine ▁Pro pag anda ▁Mov ement ▁ ▁General ▁Greg orio ▁del ▁P ilar ▁( San ▁Jose , ▁Bul ak an ), ▁Marcel o ▁H . ▁del ▁P ilar ' s ▁nep hew , ▁one ▁of ▁the ▁young est ▁revolution ary ▁gener als ▁during ▁the ▁Philipp ine ▁Revolution ▁and ▁the ▁Philipp ine – American ▁War , ▁died ▁at ▁the ▁Battle ▁of ▁Tir ad ▁Pass . ▁ ▁Mar iano ▁P once ▁( B ali u ag ), ▁phys ician , ▁Pro pag and ist ▁ ▁P ío ▁Val enz uela ▁( P olo ), ▁phys ician , ▁Kat ip un an ▁leader , ▁established ▁Kat ip un an ▁branches ▁in ▁Mor ong ▁and ▁Bul ac an ; ▁co - f ounded ▁" K al aya an ", ▁the ▁Kat ip un an ▁news letter ; ▁em iss ary ▁of ▁And rés ▁Bon ifa cio ▁to ▁José ▁R iz al ▁ ▁Tr in idad ▁T ec son ▁( San ▁Miguel ▁de ▁May um