Sigismund of Burgundy was a 6th-century monarch who ruled the Burgundian kingdom from 516 until 524. Born into royalty, he converted from Arianism to Nicene Christianity under the guidance of Bishop Avitus. After a period of intense personal remorse following the death of his son, he sought a monastic life. His reign ended during a conflict with Frankish kings, which resulted in his capture, execution, and the death of his family in Orléans.