1892 (aged 69–70)|
Troubetzkoy was born in Tulcin in 1822.
His first wife was Varvara Yourievna Troubetzkoy.
In 1865 he went to Florence (Italy) on a diplomatic mission which included the supervision of the Russian church there. In Florence he met Ada Winans, an American lyric singer, and with her moved to Ghiffa on Lake Maggiore.
In 1884, owing to the financial disaster of the Panama canal construction he was forced to sell the villa in Ghiffa and, separated from Ada, he retired with Marianna Hahn first in Milano where was born their natural son Pietro Troubetzkoy Hahn 1886, and finally to Menton (France) where he died in 1892.