After the Battle of Covadonga, in which Pelayo avoided defeat by the larger invading force, and managed to dislodge its governor Munuza altogether from Asturias, it seems likely that Peter sent his son to the court of Pelayo at Cangas de Onís.
Following the Battle of Covadonga, where Pelayo successfully countered the superior forces and removed Munuza as governor from Asturias, it seems probable that Peter sent his son to join Pelayo at Cangas de Onís.