His parents were Juan de Milà and Catalina de Borja, daughter of Juan Domingo de Borja y Doncel. He was named cardinal on 17 September 1456 by his uncle, the Pope Callixtus III de Borja. He served as administrator and bishop of Segorbe (1453-1459) and Lérida (1461-1509).
- Catholic-Hierarchy: Luis Juan Cardinal del Milà
- Biographical Dictionary - Consistory of September 17, 1456