Sir Prysin

Sir Prysin is one of King Roalds knights and is located in Varrock Castle. He is a direct descendant of Wally who defeated Delrith 150 years go and as such is the custodian of Silverlight. To reduce the risk of Silverlight falling into the wrong hands he gave a key to wizard Traiborn, Captain Rovin and kept a key for himself, though he lost it in the Varrock Sewers. You must talk to him to begin collecting the Silverlight keys.