Olegarius plays an important role in December…
December 1134 CE
Olegarius plays an important role in December 1134 when, at Zaragoza, he brokers a peace between Ramiro II of Aragon and Alfonso VII of Castile.
He had also negotiated the marriage alliances between Douce I, Countess of Provence and Ramon Berenguer III and of Petronila of Aragon to Ramon Berenguer IV.