In 1840, another attempt was made by a different group of Bantoanons; this time, they constructed a fort or cota which protected the settlement from attacks and natural calamities.When the Philippine Revolution broke out in 1898, the town joined the cause of the revolutionaries led by Tomas Fiedacan and became the first mayor of Odiongan on 1898 to 1899.This was followed the following month by a landing of Japanese forces from Panay, which massacred people in the various towns of Tablas, Romblon, and Sibuyan, including Odiongan.Most of the town's inhabitants are devout Roman Catholic and Philippine Independent Church (Independent Catholic) adherents with a small population of Protestants, including Baptists, Iglesia ni Cristo, Foursquare Gospel, Assemblies of God, Seventh-day Adventists, and Jehovah's Witnesses.Poverty incidence of Odiongan Source: Philippine Statistics Authority[14][15][16][17][18][19][20][21] As a municipality in the Province of Romblon, government officials in the provincial level are voted by the electorates of the town.Pursuant to Chapter II, Title II, Book III of Republic Act 7160 or the Local Government Code of 1991,[22] the municipal government is composed of a mayor (alkalde), a vice mayor (bise alkalde) and members (kagawad) of the legislative branch Sangguniang Bayan alongside a secretary to the said legislature, all of which are elected to a three-year term and are eligible to run for three consecutive terms.