 Romero Barceló was born in (1932 San Juan, Puerto Rico) to Antonio Romero Moreno and Josefina Barceló Bird.His father was a lawyer and engineer who served as a superior court judge.His direct maternal grandfather was Antonio Rafael Barceló the son of Jaime José Barceló Miralles from Palma, Majorca, Balearic Islands, Spain and Josefa Martínez de León from Naguabo.