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Gisela was the eldest daughter of King Conrad I of Burgundy (c. 925 – 993), presumably from his first marriage with Adelaide of Bellay. After her mother's death, King Conrad married Matilda, a daughter of the West Frankish king Louis IV; among her half-siblings were Rudolph III, who succeeded his father as King of Arles (Bourgogne Transjurane in French or 'King of Burgundy') and Bertha, who married King Robert II of France in 996.