Prince of Serbia. Younger son of Karadjordje. He fled Serbia with his father in 1813, and returned home in 1839. He was promoted to the rank of lieutenant and appointed aide to Prince Mihailo Obrenovic in 1841. After Prince Mihailo left Serbia, Alexandar was appointed prince of Serbia in his stead. He ruled for 16 years, from 1842 to 1858, but achieved little.