_Robert I DREUX _____+ | (1123 - 1188) _Robert II DREUX ____| | (1154 - 1218) | | |_Agnes of BAUDEMONT _ | _Robert III DREUX _______| | (1185 - 1234) | | | _____________________ | | | | |_Yolanda of COUCY ___| | | | |_____________________ | | |--Yolande of DREUX | (1212 - 1248) | _____________________ | | | _____________________| | | | | | |_____________________ | | |_Alianor of ST. VALÉRY _| | | _____________________ | | |_____________________| | |_____________________