[7] On January 5, 1863, Sierra Bullones was created a town both in religious and civil aspect, merging the barangays of Pamacsalan, Dinao (Bicao), Panagsagan (Guadalupe), Busoc (Bugsoc), Danicop, and Catagdaan.

[9] However, constant flooding from Wahig River pushed the residents to transfer their town center further south at barangay Candagas and converted it as Poblacion.

[10] On March 1, 1869, barangays of Dinao (Bicao) and Panagsagan (Guadalupe) together with other barrios from nearby Bilar were carved out from the municipality to create the town of Carmen.

[11] On June 21, 1956, barangays of Caluasan, Candelaria, and San Miguel were re-organized and taken from the municipality with other barriors from Carmen, Trinidad, and Ubay to form the town of Dagohoy, through Executive Order No.

[12] On December 29, 1961, the northern half of the town, consisting of barangays of Aurora, Bagacay, Bagumbayan, Bayong, Buena Suerte, Cagawasan, Catagdaan, Estaca, Ilaud, Lungsod Daan (Poblacion) with sitio Lumbay, Pamacsalan, Rizal (with sitio Del Pilar), and San Carlos carved out from its territories including other barangays from Candijay, Guindulman, and Ubay to form the new municipality of Pilar through Executive Order No.