 He was the first to be crowned as "Tsar of All the Russias", imitating in part his grandfather, Ivan III the Great, who had title Grand Prince of all Rus'.Prior to that, rulers of Muscovy were crowned as Grand Princes, although Ivan III the Great, styled himself "tsar" in his correspondence.Two weeks after his coronation, Ivan married his first wife Anastasia Romanovna, a member of the Romanov family, who became the first Russian tsaritsa.