She was the property of Alexei's tutor, Prince Nikifor Vyazemsky, but had originally been a captive from Finland, then a Swedish province, and was thereby a Swedish citizen.
Heishui Mohe (Hanja/Hanzi: 黑水靺鞨;; pinyin: Hēishuǐ Mòhé; Hangul: 흑수말갈; RR: Heuksu Malgal) roughly between the north of Hejiang Province (Shuangyashan, Jiamusi, Hegang and Yichun) and the south of actual Khabarovsk Krai (Bikin, Vyazemsky, Lazo and Khabarovsk neighbourhood).
Tatiana von Metternich-Winneburg was born in Saint Petersburg, the second daughter of Prince Hilarion Sergueïevitch Vassiltchikov (1881–1969), a member of the Russian Imperial Parliament Fourth Duma, and his wife, the former Princess Lidiya Leonidovna Vyazemskaya (1886–1946).