Von Vladimiroff
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The von Vladimiroff (Russian: Владимиров) family are a cadet branch of the von Biron family, the last rulers of the Duchy of Courland and Semigalia (German: Kurland, Latvian: Kurzeme). The family was founded by Neo-Aleksandr I von Valdimiroff, the issue of Yevdokiya Yusupova and Peter von Biron, although the pair officially had no children. As Peter von Biron's first child, many view Neo-Aleksandr I von Vladimiroff and the family as the rightful inheritors of his estate. The faction are the last known pretenders to the Duchy of Courland and Semigalia.