== Life ==
Sigismund was a student of [[Avitus of Vienne]], the Catholic [[bishop of Vienne]] who converted Sigismund from the [[Arianism|Arian]] faith of his Burgundian forebears.ref Sigismund was inspired to found a monastery dedicated to [[Saint Maurice]] at [[Agaunum|Agaune]] in [[Valais]] in 515.ref The following year he became king of the Burgundians. Sigismund's son opposed him in 517, and insulted his new wife, so Sigismund had him strangled. Then, overcome with remorse, Sigismund retreated to the monastery that he had founded.
In 523, [[Clotilde]], daughter of [[Chilperic II of Burgundy]] who had been slain by Sigismund's father Gundobad in 493, took revenge for the murder of her father, when she incited her sons against Sigismund, and provoked the Burgundian War, which led to Sigismund's deposition and imprisonment, and his assassination the following year. In 523, the [[Kingdom of the Burgundians]] was invaded by the four kings, [[Chlodomer]], [[Childebert I]], [[Clotaire I]] and [[Theodebert I]], children of Frankish king [[Clovis I]] and Sigismund's second cousins by Clotilde. Sigismund and his brother [[Godomar]] led the Burgundian defence but lost the battle. Godomar fled while Sigismund put on a monk's habit and hid in a cell near his abbey. He was captured by Chlodomer, king of Aurelianum (modern [[Orléans]]), and taken prisoner to Aurelianum. Godomar then rallied the Burgundian army and called for aid from his ally, the [[Ostrogoth]]ic king [[Theodoric the Great]].ref Godomar regained his territory. However, the garrison the Franks had left behind were massacred.
Chlodomer went on the offensive again but was killed at the [[Battle of Vézeronce]], which took place on 25 June 524, reportedly at the hands of Godomar. In vengeance, Frank soldiers beheaded Sigismund and threw his body in a well.ref Sigismund's two sons Gisald and Gondebaud were also put to death. Sigismund was succeeded on the throne by his brother Godomar.