 On 19 Oct 1689, he was appointed as Cardinal-Bishop of Albano and consecrated on 20 Nov 1689 by Flavio Chigi, Cardinal-Bishop of Porto e Santa Rufina, with Giambattista Rubini, Bishop of Vicenza, and Francesco Juste Giusti, Bishop of Nepi e Sutri, serving as co-consecrators.His brother Godefroy Maurice de La Tour d'Auvergne was the next Duke of Bouillon.His oldest sister Élisabeth, married Charles III, Duke of Elbeuf, son of Charles II, Duke of Elbeuf and Catherine Henriette de Bourbon.