Anatolian beyliks
Based in Kastamonu, Süleyman II remained faithful to Murad I, his supporter in his revolt against his father, and participated in Ottoman campaigns in Europe in 1386 and 1389. Murad's successor, the aggressive Beyazid I launched an assault in 1391 on Kastamonu as part of an effort to control the Anatolian beyliks. Süleyman II was killed and Jandarids' rule in Kastamonu ended.