Walter Alison Phillips, 1911 Encyclopædia Britannica, Volume 15… (1911)
“ The emperor Alexander having opened the Crimea to German and Swiss chiliasts in search of a land of promise, the baroness’s son-in-law Berckheim and his wife now proceeded thither to help establish the new colonies. In November 1820 the baroness at last went herself to St Petersburg, where Berckheim was lying ill. She was there when the news arrived of Ypsilanti’s invasion of the Danubian principalities, which opened the war of Greek independence. She at once proclaimed the divine mission of the tsar to take up arms on behalf of Christendom. ”
