Authari (c. 540 – 5 September 590, Pavia) also known as Agilolf, was king of the Lombards from 584 to his death. After his father, Cleph, died in 574, the Lombardic nobility refused to appoint a successor, resulting in ten years interregnum known as the Rule of the Dukes.In 574 and 575 the Lombards made the blunder of invading Provence, then part of the kingdom of Burgundy of the Merovingian Guntram. Guntram, allied with his nephew, the king of Austrasia, Childebert II, invaded Lombardy.