and was afterwards king of the Swedish dominions for a long time, until at last the Swedes betrayed him, and he was killed. In the part called The Saga of St. Olaf, the Norwegian king Olaf Haraldsson makes shore at Old Sigtuna: King Olaf steered thereafter eastwards to Svithjod, and into the Lag (the Mælar lake), and ravaged the land on both sides. He sailed all the way up to Sigtuna, and laid his ships close to the old Sigtuna. The Swedes say the stone-heaps are still to be seen which Olaf had laid under the ends of the gangways from the shore to the ships. Skaldic poetry In Orvar-Odd's saga, Hjalmar laments his dying: The location is also mentioned in other poems by the 11th-century skalds Þjóðólfr Arnórsson Valgarðr á Velli and Arnórr Þórðarson. Gesta Danorum Saxo Grammaticus writes in Book 8 of Gesta Danorum that Sigmund, one of the warriors of the House of Yngling, came from what is chronologically Old Sigtuna to fight at the Battle of Bråvalla: They likewise held the god Frey to be the founder of their race. Amongst these from the town of Sigtun also came Sigmund, a champion advocate, versed in making contracts of sale and purchase; besides him Frosti surnamed Bowl: allied with him was Alf the Lofty (Proud?) from the district of Upsala; this man was a swift spear-thrower, and used to go in the front of the battle. Archaeology There are two large ruins that had been two large three-aisled halls, a series of terraces just above the shore-line of the Germanic Iron Age, traces of a harbour, a large mound and a number of smaller grave fields. Excavations have dated the remains to the Vendel Age, part of the Germanic Iron Age, and the Viking Age, i.e., from the 6th century until the 11th century. History It was an Iron Age and mediaeval royal estate (see Uppsala öd) and it was located strategically at the waterway to Old Uppsala and the Temple at Uppsala. In the 10th century, the name was transferred to modern Sigtuna, which apparently assumed many of its functions. It is mentioned in the 1170s when Pope Alexander III addresses king Knut Eriksson and Jarl Birger Brosa (Svenskt Diplomatarium I nr 852. Originalbrev). The pope demands that they return to the archbishop of Uppsala (until 1270 the name referred to Gamla Uppsala) the villages Strom