This was the man entrusted by Bonifacio to handle espionage work for the Katipunan. San Nicolas a most unlikely place, a growing Manila suburb, dangerously close to the enemy fortress, that Bonifacio chose to set up his headquarters, to direct the operations of the Katipunan, to plot out the next move to wrest the city from Spanish hands.
Ayon kay Hen. Artemio Ricarte at Hen. Santiago Alvarez, bago magkaroon ng walang planong halalan sa Tejeros, si Daniel Tirona ay nagkakalat na nang mga balita laban sa Supremo Bonifacio. Na ang Supremo ay isang Mason, na hindi naniniwala sa Diyos, walang relihyon at galit sa cruz.