Fidel Villarroel is a Spanish historian, writer, filipinologist, biographer, political commentator, Master Theologian of the Dominican Order, and member of the Order of Isabella the Catholic.
A recipient of the Pro Ecclesia et Pontifice, he is the former Archivist, Spanish Department Director, Prefect of Libraries, and professor at the Pontifical and Royal University of Santo Tomas.
He had also served as secretary to the Apostolic Nunciature for 32 years(1959ā1991), and is currently an academic director of the prestigious Academia Filipina de la Lengua EspaƱola (Philippine Academy of the Spanish Language), the local branch of the renowned Real Academia EspaƱola based in Madrid, Spain, and part of the AsociaciĆ³n de Academias de la Lengua EspaƱola (Association of Spanish Language Academies).He is also known as the most-prolific saint-maker in the Philippines for his Positio Super Introductione Causae, or historical research, that he made for the beatification and canonization of Lorenzo Ruiz and fifteen other companion-martyrs.