Andrés Bonifacio y de Castro, remembered as the father of Philippine Revolution against Spanish occupation, was born in Manila in the mid-19th century to working class parents. Compelled to leave school after his parents’ premature death, he started working at the age of 14 in order to look after his younger siblings. Yet, he continued to study in private, gaining comprehensive knowledge in the process and becoming aware of Spanish oppression. At the age of 29, he cofounded Katipunan with the intention of overthrowing Spanish rule through armed revolution. He became its Presidente Supremo at the age of 32. When the armed revolution actually broke out a year later, his unit could not do very well. It enabled others to challenge his position and eventually he was replaced by Emilio Aguinaldo as the President of Philippine Republic. When he refused to accept it, he was arrested and tried for treason before being executed by a firing squad.