Olyvar Frey

Olyvar Frey is a character in Game of Thrones. He is one of the many sons of Walder Frey.

Baelor
When Catelyn Stark negotiates with Walder Frey to gain permission for her son Robb Stark and his army to pass the The Twins, Walder demands(amongst others) that his son Olyvar will become squire to Robb, and that he will later be knighted. Robb accept these terms.