the historical development of san isidro
In 1966, a group of prominent citizens living in the Ganano Region west of the municipality of Echague, headed by Barrio Captain Guillermo Mariano and Municipal Councilor Ricardo Netro prepared a petition requesting the Hon. Melanio T. Singson, then Congressman of Isabela, to file a bill in Congress creating a new town in the part of the municipality of Echague. Former Mayor Patricio O. Ramos of Echague, at that time a member of the Isabela Provincial Board, headed the delegation to Congressman Singson.
At first, Congressman Singson was reluctant to file a bill. He told the delegation that he did not believe in the wisdom of creating a distinct and independent municipality with a very limited area and of course with a limited income. He enumerated the hardships that a new municipality would encounter. However, due to the insistence of the delegation, the congressman relented. When the Congress convened in 1967, Congressman Singson filed a bill which became a Republic Act No. 5139. The bill became a law without Presidential Approval on June 17, 1967. The town of San Isidro was inaugurated on January 1, 1968.
The naming of the new town was for a time problem. When Congressman Singson asked for the name to be adopted, the members of the delegation could not readily give one. This matter was not previously taken up with the people region, neither the delegates decide what name to adopt. Board Member Ramos knows that the residents of Camarag wanted the town site to be in their barrio for sentimental reasons. Camarag used to be the capital of Nueva Vizcaya during Spanish times. But Camarag lies on the boundary of Echague and the proposed new town. Board member Ramos wanted a centrally located town site so he proposed the town site to be in between barrios Gomez and Rizal and suggested San Isidro as the name of the new town. The suggestion was readily approved by all members of the delegation.
The early inhabitants of the region were Yogads. Antonio Mangadap who was regarded by his people as a warrior and diplomat was their leader. He traveled to other parts of Luzon and it was during his travels that he was able to convince the Ilocanos of Laoag , IIocos Norte and Cabugao, IIocos Sur to immigrate to Camarag . This accounts for the fact that even during the early days there were already IIocanos in the area .When Antonio died , his son, Jordan , who was educated in the early Spanish schools, took over the leadership . He became a gobernadorcillo and acted as judge among the people. Other members of the Mangadap clan took over the leadership and among the most prominent was Alfredo, the father of Mayor Proceso Mangadap.