Joseph F. O’Callaghan 
The Learned King 
The Reign of Alfonso X of Castile

This book is a volume in the Penn Press Anniversary Collection. To mark its 125th anniversary in 2015, the University of Pennsylvania Press rereleased more than 1, 100 titles from Penn Press’s distinguished backlist from 1899-1999 that had fallen out of print. Spanning an entire century, the Anniversary Collection offers peer-reviewed scholarship in a wide range of subject areas.

About the author

Joseph F. O’Callaghan is Professor Emeritus of Medieval History, Fordham University. He is the author of The Last Crusade in the West and Reconquest and Crusade in Medieval Spain, both available from the University of Pennsylvania Press.