Peter Urusov was a prince who killed False Dmitry II

False Dmitry II

False Dmitry II , also called the rebel of Tushino, was the second of three pretenders to the Russian throne who claimed to be Tsarevich Dmitry Ivanovich of Russia, the youngest son of Ivan the Terrible...

 on 11 December 1610. The event was described by Hetman

Hetman

Hetman was the title of the second-highest military commander in 15th- to 18th-century Poland and the Grand Duchy of Lithuania, which together, from 1569 to 1795, comprised the Polish-Lithuanian Commonwealth, or Rzeczpospolita....

 Stanisław Żółkiewski in his memoirs:

Having drunk deep at dinner...he ordered a sleigh to be harnessed, taking flasks of mead to the sleigh. Coming out into the open country, he drank with some boyars. Prince Peter Urusov, together with those several score horsemen with whom he was in league, was riding after him, apparently escorting him. And when the imposter had drunk very well with the boyars, Urusov drew from his holster a pistol which he had ready, and galloping up to the sleigh first shot him with the pistol, then cutting off his head and hand with his saber, took to the road.

The name can also refer to another Prince Peter Urusov, who with English entrepreneur Peter Maddox founded the Bolshoi Theater.