Serment du Jeu de paume
In 1792 Lally-Tollendal was arrested but managed to emigrate to England prior to the September Massacres. He joined the opposition to the strict regime of the Marquis de Mirabeau, and condemned the decisive rejection of the "Ancien Régime" by the National Constituent Assembly, begun by the Tennis Court Oath and confirmed by the abolition of feudalism on 4 August 1789. Later in the year he emigrated to Great Britain.