 Through her marriage to Ivan IV, Anastasia became the link between two main ruling dynasties in Russian history, the Rurik dynasty and the Romanov dynasty.Anastasia's brother Nikita Romanovich was the father of Feodor Romanov, the first to take the surname Romanov in honour of his grandfather, father of a tsaritsa.In other words, Feodor Romanov was the first cousin of the last Rurikid tsar, Feodor I.