Monaco Prince Pierre Casiraghi Hospitalized After New York City Bar Brawl NEW YORK - The grandson of the late Princess Grace of Monaco was hospitalized after a brawl in a Manhattan nightclub. Prince Pierre Casiraghi suffered cuts to his face. Former nightclub owner Adam Hock was arraigned Sunday on charges of assaulting the prince and three friends at the Double Seven nightspot in the Meatpacking District. Attorney Richard Golub, representing the 24-year-old prince, told The Associated Press that Casiraghi was treated at a hospital and released after Saturday's incident. Golub says Casiraghi's group did not "instigate anything" or provoke the attack. But Hock told the New York Post that the prince and his entourage "were being completely obnoxious," verbally abusing the women with him. Also punched in the melee was shipping heir Stavros Niarchos III.