Princess of the Royal Blood, Tatiana Konstantinovna, in costume. (1890-1979) cousin to the Tzar's children. She was to be the first daughter of the Romanovs to openly marry a Russian subject or non-dynastic prince since the dynasty ascended the throne in 1613. Legally Tatiana Konstantinovna's marriage was morganatic. Tatiana was able to escape Russia in 1918.