Papa Stour is the subject of a 1299 manuscript written in Old Norse , which is the oldest surviving document from Shetland . It deals with a dramatic incident in the house of Duke Hakon Magnusson , who was later to become King Hakon V of Norway . It is a circle of stones near the beach at Housa Voe , which are the remains of a ' ting ' , or local assembly . This was the scene of a duel , fought and won by Lord Thorvald Thoresson , who was accused of corruption in the 1299 document and was later called ‘ dominus de Papay ’ . ( The story of his unfortunate daughter is referred to above . ) The remains of Duke Hakon 's thirteenth @-@ century house are still visible near Housa Voe .