'Licentious or bigoted, noble or ignoble, ' wrote Nancy Mitford, 'there has seldom been a dull Bourbon.' The story of the Bourbon kings encompasses the two most glorious and turbulent centuries in French history, yet surprisingly, this is still the only narrative account of the dynasty for the general reader. They emerge from a shadowy line of medieval princes in 1589 to rule France for over 200 years, dominating Europe, launching an...