Leoncio Imperial was a former Senator (1916-1922) for the Sixth Senatorial District of Albay, Sorsogon, Camarines Sur, Camarines Norte and Masbate. He belonged to the popular political clan of Imperials from the province of Albay.
His brothers were also into politics namely Domingo Imperial, a former senator of the Philippine Senate (1934-1935;1941-1946); Carlos Imperial, a former congressman (1907-1909); and Jose Imperial, a former governor of Albay province; Feliciano Imperial, first mayor of Legazpi City and his nephew Carlos D. Imperial, who is a former Representative of the 2nd District of Albay (1965-1972 and 1987-1998), and an Assemblyman to the Interim Batasang Pambansa (1978-1984).
- "Civilization of Love." (October 4, 2007).
- "Political dynasties bared." (October 4, 2007).
- "Senate of the Philippines 14th Congress." (October 4, 2007).