Espousing the principles of the Revolution in 1789, he was commissioned by the noblesse of the province to draw up the cahier (statement of principles and grievances); and the senechaussee of Montpellier elected him deputy to the states-general of Versailles; but the election was annulled on a technical point.
By espousing the cause of John of Montfort Edward obtained a good foothold on the flank of France, for many of the Breton fortresses were put into his hands.
Drawn gradually by that family into espousing the French cause against Paoli and the Anglophiles, he was forced to leave Corsica and to proceed with Laetitia and her son to Toulon, in the early part of the autumn of 1793.
In 1821 Lord Eldon had been created Viscount Encombe and earl of Eldon by George IV., whom he managed to conciliate, partly, no doubt, by espousing his cause against his wife, whose advocate he had formerly been, and partly through his reputation for zeal against the Roman Catholics.
At this juncture the government of Chile interfered actively, and espousing the cause of Gamarra, sent troops into Peru.