Born in 1942 close to Santiago de Compostela, Carbó Alonso used to visit the cathedral as a child with his grandmother. The Pórtico de la Gloria has a profound impact on him and he has searched ever since for someone who could explain its images to him. He graduated from the UNiversidad Comercial de Deusto in 1965. He has worked as a systems engineer, and held positions of responsibility in the financial field, and has collaborated with several financial institutions across the whole of Spain as a specialist in organization. He has walked the Camino de Santiago as a pilgrim via various routes and in 2004 accompanied the pilgrimage of European MPs organized by COMECE. He began his research into the Pórtico with Otero Pedrayo and Filgueira Valverde. After many years of study and compiling materials and he has decided to publish this indispensable work.