On March 22, 1897, a revolutionary assembly was held in the building known as Casa Hacienda that once stood in this site. Located in the former sitio of San Francisco de Malabon (now General Trias), Casa Hacienda was a mute witness to the first presidential elections in Philippine history and the controversies that arose from it.
Originally called for an assembly to discuss their strategies for the Philippine Revolution, towards the end of the session, however, the assembly decided to establish a central revolutionary government. As the Supremo of the Katipunan, Andres Bonifacio presided the election.
There were three nominees for the presidency: Bonifacio (Magdiwang Party), General Emilio Aguinaldo (Magdalo Party), and Mariano Trias (Magdalo Party). But Aguinaldo was elected in absentia as president. Other elected were: Trias as vice president, Artemio Ricarte as Captain General, Emiliano Riego de Dios as Director of War, and Bonifacio as Director of the Interior.
It was also during the Tejeros Convention that the Philippine Army was established. General Artemio Ricarte is regarded as the Father of the Philippine Army.
There were allegations of electoral fraud that happened during the faction-marred Convention. Tragically, this set a precedent that haunted and shamelessly characterized Philippine electoral exercises for years and decades to come.
The Casa Hacienda is now under the administration of the Municipality of Rosario, Cavite.