THE ROYAL HOUSES OF EUROPE - SAXE-COBURG-GOTHA (3rd Edition - 2006)The Descendants of Duke Franz, through ten generations. The most prolific family of the Saxon duchies ruled the Coburg and Gotha Duchies until 1918. It sent its princes to take forward the British and Portuguese Royal Houses, and to establish monarchies in Belgium and Bulgaria. Its own succession passed through the British Royal family in the final decade of the nineteenth century. Its descendants include the last Habsburg Emperor, and the Pretender