The governor of Amasya was his son in law. He supported his son-in-law against Kadı Burhaneddin. In early years he was an ally of the Ottomans. But when his son Süleyman killed İsfendiyar, his other son whom Celaleddin Bayazıt was planning to declare crown prince, Celaleddin Bayazıt defeated his son and Süleyman fled to Ottoman territory. This event marked the end of Candaroğlu –Ottoman alliance. Ottomans supported Süleyman against his father. Süleyman captured Kastamonu from his father in 1383. Although Celaleddin Bayazit recaptured Kastamonu, Ottomans finally annexed Kastamonu in 1384 and Candaroğlu beylik was reduced to a small territory around Sinop. Next year Kötürüm Bayazit died.Yaşar Yücel-Ali Sevim:Türkiye Tarihi Vol 1 Sabah yayınları pp 200-201
