Estorick, Michael. Heirs & Graces : the claim to the Dukedom of Leinster / Michael Estorick. - London : Weidenfeld and Nicolson, 1981. - xi, 164 p., [8] p. of plates : ill., geneal. table, ports. ; 24 cm. Includes index. Loose spine. ISBN: 0297779559 : (Hbk.) £9.87 Subjects--Personal Names: Fitzgerald family. Subjects--Topical Terms: Nobility--Ireland--Biography. Subjects--Geographic Terms: Ireland--Genealogy.Leinster (Ireland) Dewey Class. No.: 929.7