_Richard fitz Gilbert II_ _Roger de Clair _______|_Adeliz__________________ _Richard de Clair ________| | | _James de St. Hilary ____ | |_Maud de St.Hilary ____|_________________________ _Gilbert de Clair III_| | | _________________________ | | _William of Gloucester_|_________________________ | |_Amicia ( of Gloucester )_| | | _________________________ | |_______________________|_________________________ | |--Richard de Clair IV | | _________________________ | _______________________|_________________________ | _William Marshal _________| | | | _________________________ | | |_______________________|_________________________ |_Isabel Marshal ______| | _Gilbert fitz Gilbert____ | _Richard fitz Gilbert__|_Isabel de Beaumont _____ |_Isabel fitz Gilbert _____| | _Dermont McMurrough _____ |_Eva McMurrough _______|_________________________