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Brunhilda (c. 543–613) was queen consort of Austrasia, part of Francia, by marriage to the Merovingian king Sigebert I of Austrasia, and regent for her son, grandson and great-grandson.
In her long and complicated career she ruled the eastern Frankish kingdoms of Austrasia and Burgundy for three periods as regent for her son Childebert II from 575 until 583; her grandsons Theudebert II and Theuderic II from 595 until 599; and her great-grandson Sigebert II in 613. The period was marked by tension between the royal house and the powerful nobles vying for power.
Brunhilda was apparently an efficient ruler, but this and her forceful personality brought her into conflict with her nobles, the church and the other Merovingians. Her bitter feud with Fredegund, mistress of Chilperic I of Neustria, who murdered Brunhilda's sister, Queen Galswintha (c. 568) in order to replace her as queen, lasted until Fredegund's death in 597. Fredegund had Brunhilda's husband murdered and Brunhilda imprisoned for a period. This feud was continued by Fredegund's son, Chlothar II, who in 613 defeated Brunhilda in battle and had her executed by being pulled apart by four horses.