 Prince August was a younger brother of King-Consort Ferdinand II of Portugal, a nephew of Leopold I of Belgium, and a first cousin of Britain's Queen Victoria, and her husband, Prince Albert.In Saint-Cloud on 20 April 1843 August married Princess Clémentine of Orléans, daughter of Louis Philippe, King of the French, and of his wife, Princess Maria Amalia of the Two Sicilies.The couple lived in Palais Coburg in Vienna.