SEMYON ALEKSANDROVICH (after 1417 - ? )

He was a son of Aleksandr Vladimirovich, prince of Kyiv and Anastasia Vasil'yevna, princess of Moscow He became prince of Pinsk. His daughter was Sofia, who married Mikhail Borisovich, the last grand prince of Tver who was chased out by Ivan III. The family is shown on this chart.