Archaeology
According to Snorri Sturluson, Eadgils was buried in one of the royal mounds of Gamla Uppsala, and he is believed to be buried in Adils' Mound (also known as the Western mound or Thor's mound) one of the largest mounds at Uppsala. An excavation in this mound showed that a man was buried there c. 575 on a bear skin with two dogs and rich grave offerings. There were luxurious weapons and other objects, both domestic and imported, show that the buried man was very powerful. These remains include a Frankish sword adorned with gold and garnets and a board game with Roman pawns of ivory. He was dressed in a costly suit made of Frankish cloth with golden threads, and he wore a belt with a costly buckle. There were four cameos from the Middle East which were probably part of a casket. The finds show the distant contacts of the House of Yngling in the 6th century.
Snorri's account that Adils had the best horses of his days, and Jordanes' account that the Swedes of the 6th century were famed for their horses find support in archaeology. This time was the beginning of the Vendel Age, a time characterised by the appearance of stirrups and a powerful mounted warrior elite in Sweden, which rich graves in for instance Valsgärde and Vendel.
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