روبرت الثاني
His first marriage with Mahaut of Burgundy (1150–1192) in 1178 ended with separation in 1181 and produced no children. The excuse for the annulment was consanguinity. Mahaut and Robert were both great-great grandchildren of William I, Count of Burgundy and his wife Etiennete and they were both Capetian descendants of Robert II of France.