Lady Cecily Lennox (1750-1769) (1750–1769) Parents Sarah Lennox, Duchess of Richmond and Lennox Charles Lennox, 2nd Duke of Richmond Children David I Robert Arthur Nicholls, Comte de Cherbourg Robert XI Arthur John Nicholls, Comte de Cherbourg Siblings Louisa Conolly Lord George Lennox Sarah Lennox Caroline Fox, 1st Baroness Holland Emily FitzGerald, Duchess of Leinster Charles Lennox, 3rd Duke of Richmond Charles Lennox, Earl of March Partners Robert XI Arthur Geoffrey Nicholls, Comte de Cherbourg