Razumovsky

The main family line became extinct in the 19th century, while its Austrian branch exists to this day.

Yakiv Rozum and his son Hryhoriy were registered Cossacks of the Kiev Regiment.

[1] Ivan Yakovlevich Rozum was raised to the rank of Count of the Holy Roman Empire by Emperor Charles VII, but died without children.

His brother, Grigoriy Yakovlevich Rozum, had two children — Kirill and Alexey.

After Alexey became a favorite of the Russian Empress Elizabeth of Russia, the family name was changed to Razumovsky for all Rozums.