She eventually married in 1823 a somewhat younger army officer, Captain James Patrick Catty of the Royal Engineers, who was the son of Louis Francois Catty, who was either a refugee from the French Revolution or a French Canadian, sources differ. He anglicised his name to Lewis Frances and taught French for many years during the Napoleonic wars at the Woolwich military academy. The wedding was a significant affair and was followed by a reception given by Maria Fitzherbert, George IV's morganatic wife.