In 1948, the barrios of Jiabong, Jiaan, Malino, San Fernando, Casapa, Camoroboan, Lologayan, Magcabitas, Paglayogan, Dogongan, Bayog, and Malobago were separated to form the municipality of Jiabong [REF].
On June 19, 1965, the Philippine Congress, along with the province's three congressmen, Eladio T. Balite (1st District), Fernando R. Veloso (2nd District) and Felipe J. Abrigo (3rd District), approved Republic Act No. 4221 dividing Samar into three provinces, namely Western Samar, Eastern Samar and Northern Samar, respectively.