What gender class does XXX belong to?
Pyotr Nikolayevich Gruzinsky
Prince Pyotr Nikolayevich Gruzinsky (Georgian: პეტრე ნიკოლოზის ძე გრუზინსკი; Russian: Пётр Николаевич Грузинский; literally ``Peter of Georgia''; 1837--1892) was a Georgian royal prince (batonishvili) from the House of Mukhrani of the royal Bagrationi dynasty.