Ildefonsus or Ildephonsus was a scholar and theologian who served as the metropolitan Bishop of Toledo for the last decade of his life. His Gothic name was Hildefuns. In the Ethiopian Orthodox Tewahedo Church he is known as Dexius based on the Ge'ez translation of legends about his life.

The Archdiocese of Toledo is a Latin Church archdiocese of the Catholic Church located in Spain. They are also the Primates of Spain. It was, according to tradition established in the 1st century by James the Great and was elevated to an archdiocese in 313 after the Edict of Milan. The incumbent Metropolitan Archbishop also bears the title Primate of Spain and since 1937 the title General Vicar of the Armies