Dmitri Konstantinovich Kantemir was born 1749 to Constantin Cantemir (1705-1776) and Sofia Bogdanovna Passek (1722-1783) and died 17 May 1820 Kiev, Ukraine of unspecified causes. He married Cecilia Mustafa (c1755-c1810) 1774 . He married Elizaveta Khrushova (c1760-c1830) .
Dmitri Konstantinovich Kantemir was colonel in the Russian army. Towards the end of his life, he had a severe mental disorder and was confined for 17 years in the citadel of Revel (present day's Tallin, Estonia)