Book excerpt: Dr G.S.P. Freeman-Grenville was the consultant for Burke's Royal Families of the World, and his major work was the Chronology of World History. This specially commissioned Book of the Kings & Queens of Britain, a magisterial and entertainingly written overview of British monarchs from Cerdic, First King of Wessex, to George VI, is an invaluable guide to the regal chronology of Britain, and contains many insights into the foibles of one of the world's most interesting and resilient constitutional monarchies - through the vagaries of war, pestilence, regicide, civil wars and marriage.