Emilio Jacinto y Dizon also known as Emilio Jacinto was born on December 15, 1875 in Trozo, Manila.

His parents were Mariano Jacinto and Josefa Dizon. When his father died, his mother Josefa had to support Emilio’s studies all by herself.

He studied in Colegio de San Juan de Letran and took law at the University of Santo Tomas. Some of his schoolmates in UST were Manuel Quezon, Sergio Osmena and Juan Sumulong. Unfortunately, Emilio wasn’t able to finish college when he became part of Katipunan.

Emilio Jacinto was known to be the"Brain of the Katipunan". At his young age of 19, he became one of the leaders of Katipunan. He was also an adviser, secretary and a fiscal. He was the editor of “Ang Kalayaan”, the newspaper of the Katipunan which informed people about the aims and activities of Katipunan.