Heraclius II of Georgia
After the establishment of the First Georgian Republic following the Russian Revolution, Mary's fiancé Prince George Eristavi — an important Georgian nobleman, great-great grandson of King Heraclius II of Georgia and a former "aide-de-camp" of Nicholas II — returned to Georgia with intent to marry her. They wed in Kutaisi soon after his arrival and, likely because of security reasons, settled permanently in the country which at that time was a stable Menshevik stronghold under German protection.