On 29 October 1816, Caroline Augusta married Francis II, Emperor of Austria, King of Hungary and Bohemia. She became the fourth wife of the emperor, who was 24 years older than her and had fathered thirteen children by two of his previous wives. The English diplomat Frederick Lamb called the new empress "ugly, clever and amiable," and the emperor her husband had this to say of her: "She can stand a push, the other was nothing but air." The wedding, and indeed their married life, was very simple due to the strict economy favoured by the Emperor. Prior to this marriage, Caroline Augusta had always been known as Charlotte, but now she began using the name Caroline.