As Brunhilda was a great queen, tradition ascribes to her the construction of many old castles, and a number of old Roman roads are also known by the name of Chaussees de Brunehaut.
They have even tried to interpret the long struggle between Fredegond and Brunhilda as a rivalry between the two kings of Neustria and Austrasia.
In order to avenge her sister, Brunhilda incited Sigebert to begin a war which terminated in 575 with the assassination of Sigebert by Fredegond at the very moment when, thanks to the help of the Germans, he had gained the victory, and with the imprisonment of Brunhilda at Rouen.
After the war between Theodebert and Theuderich and their subsequent death, the nobles of Austrasia and Burgundy appealed to Clotaire, who, after putting Brunhilda to death, became master of the whole of the Frankish kingdom (613).
Died shortly after this victory, and Brunhilda caused one of her great-grandchildren to be proclaimed king.