 His son Mehmed Bey took over the family possessions around Sinop and pursued a prudent policy of allegiance to the Mongols, which was also pursued under his son Mesud Bey's period as Bey.Mesud Bey was kidnapped by the Genoese in 1298 and was held for a heavy ransom.The last representative of the Pervane's line was probably the Gazi Chelebi, a notable pirate who ruled Sinop in the first decades of the 14th century.