John Holland Rose,
1911 Encyclopædia Britannica, Volume 24…
(1911)
“ With Murat Savary made skilful use of the schisms in the Spanish royal family (March-April 1808) , and persuaded Charles IV., who had recently abdicated under duresse, and his son Ferdinand VII., the de facto king of Spain, to refer their claims to Napoleon. Savary induced Ferdinand to cross the Pyrenees and proceed to Bayonne—a step which cost him his crown and his liberty until 1814. In September 1808 Savary accompanied the emperor to the famous interview at Erfurt with the emperor Alexander. In 1809 he took part, but without distinction, in the campaign against Austria. ”
