It is notable that other Baltic tribes — i.e., the Letts and Lithuanians — are not mentioned by Saxo as participating in the fight.[13] Snorri Sturluson relates in his Ynglinga saga how the Swedish king Ingvar (7th century), the son of Östen and a great warrior, who was forced to patrol the shores of his kingdom fighting Estonian pirates. The saga speaks of his invasion of Estonia where he fell in a battle against the men of Estland who had come down with a great army. After the battle, King Ingvar was buried close to the seashore in Estonia and the Swedes returned home.[14]