Alibata - Mariano Trías y Closas (October 12, 1868 – February 22, 1914) is considered to be the first de facto Philippine Vice President of that revolutionary government established at the Tejeros Convention - an assembly of Philippine revolutionary leaders that elected officials of the revolutionary movement against the colonial government of Spain. When that assembly broke into factions, a truce known as the Pact of Biak na Bato was signed by the group and also recognized the elected officials and Trias as the vice president of Emilio Aguinaldo, who is also considered to be the first President of the Philippines. With the promulgation of the Malolos Constitution by the Malolos Convention, the First Philippine Republic was born. Under this Aguinaldo administration, Trias served in the cabinet as the Minister of War and Finance.
When two councils of the Katipunan revolutionist came into existence (namely, the Sangguniang Bayang Magdiwang and the Sangguniang Bayang Magdalo), both factions set up their respective councils of leaders. Trias became the Minister of Justice and grace of the Magdiwang group.
He was married to María Concepción Ferrer with whom he had eight children.
The Filipino nation expressed its gratitude to General Trias, when the town of San Francisco de Malabon was renamed after him by virtue of Act No. 2880.