Originally known as Caruya/Caluya as per as the history records regarding the early years of the establishment of Bulacan Province, Caruya was one of the Encomiendas of the vast region La Pampanga falls under the Alcalde Mayor of Bulacan. Encomienda de Caruya was Encomienda of the King of Spain which appeared in Miguel de Loarca's Relacion delas Isla Filipinas in 1582 and the Report of Governor- General Luis Perez de DasmariƱas of June 21, 1591 document. The propagation of catholic instructions in Caruya initially belongs to Bulakan Convent and it was directly administered by Alcalde Mayor of Bulacan but it was transferred to Malolos Convent at uncertain date. Bigaa is one of the ancient towns of the Province together with Calumpit 1571 (became Town in 1575) Bulakan 1575 (became Town in 1578) Meycauayan 1578, Malolos 1571 (became Town in 1580) and Binto 1581 (a former visita of Malolos became Town renamed as Binto y Quingua 1602) later known as Plaridel. The Catalogo of 1591 indica...