Yekaterina Isakova (1864-1948) (1864–1948) Parents Nikolay Isakov Anna Lopukhina Children Count Vassili Adlerberg Count Nikolai Adlerberg Countess Anna Adlerberg Count Alexander Adlerberg Siblings Pyotr Isakov Vasily Isakov Mariya Isakova Sergey Isakov Partners Aleksandr Adlerberg