Abbot Oliba
Oliba was very influential. In 1023, King Sancho III of Navarre asked him for advice because he wanted his sister Urraca to be her second cousin Alfonso V of León. Oliva said not to do it, but Sancho ignored him. His letters to the various contemporaneous kings of Spain indicate to us that Alfonso and his successor, Vermudo III, were regarded as imperatore. And the king of Navarre was a mere rex.