_____________________ | _____________________| | | | |_____________________ | _Thomas of BERKELEY _| | | | | _____________________ | | | | |_____________________| | | | |_____________________ | | |--Maurice of BERKELEY | | _____________________ | | | _William of FERRERS _| | | | | | |_____________________ | | |_Joan of FERRERS ____| | | _Roger of QUINCY ____+ | | |_Margaret of QUINCY _| | |_Helen of GALLOWAY __