[4][5] Mariano was the fifth of the nine children of Don Balbino Trías, a Cabeza de Barangay and Justice of the Peace during the Spanish regime who, after his term of office, become a landowner-farmer.

Before the revolution in August 1896, he joined the Katipunan and became an active propagandist in the towns of Silang and Kawit in Cavite.

In the election of the Katipunan popular council, which was organized by the Sangguniang Balangay of Mapagtiis, he was named fiscal.

[6] Assuming the nom-de-guerre 'Labong' (which means "bamboo shoots"), he recruited troops and solicited contributions from rich Filipinos in Indang and Alfonso, Cavite, to help finance the effect.

This happened while Emilio Aguinaldo and the Magdalo factions were desperately trying to stop the advancing of the Lachambre soldiers.

At the revolutionary assembly convoked by Aguinaldo in Naic, Cavite on April 17, 1897, to complete his cabinet, Trías was again chosen as vice president.

He figured in a series of furious skirmishes with the troops of General Loyd Wheaton in January 1900 when he held the defense of Cavite until his men were finally dispersed.

[12][13] He sailed to the United States as member of the honorary board of Filipino commissioners to the Louisiana Purchase Exposition in 1904.

On February 24, 1920, the town of San Francisco de Malabon was renamed General Trias in his honor.

General Mariano Trías married María Concepción Ferrer with whom he had two children: As part of the bigger Gomez family that moved to Cavite in 1824 along with Fr.