Claim: Rudolph I of Burgundy (859-912) was the spouse of Guilla of Provence, and  inherited the lay abbacy of St Maurice en Valais from his father.
Evidence: Rudolph I (859 – October 25, 912) was King of Upper Burgundy from his election in 888 until his death. From his father he inherited the lay abbacy of St Maurice en Valais, making him the most powerful magnate in Upper Burgundy - present-day western Switzerland and the Franche-Comté. Rudolf I's widow, queen Guilla, married Hugh of Arles in 912. Guilla of Provence 
859 (912-10-25)25 October 912 Guilla of Provence