 Catanduanes last formed part of the province's representation in 1946, when it began to elect its own representative as a full-fledged province.The first district is among the original representative districts from 1907 which has never changed in territorial coverage, along with Ilocos Norte's first and second, Ilocos Sur's first, and Iloilo's first, districts.Albay, which at the time included the sub-province of Catanduanes, was initially divided into three assembly districts in 1907.