Rubuta ci gaba don wannan sakin layi - İsa yana ɗaya daga cikin 'ya'yan Beyazid I, sultan Ottoman. Mahaifiyarsa ita ce Devletşah Hatun, 'yar Süleyman Shah na Germiyanids da Mutahhara Abide Hatun, 'yar Sultan Veled. İsa yayi aiki a matsayin gwamnan sanjak a Antalya kuma ya yi yaƙi a Yaƙin Ankara
a shekara ta 1402 tare da mahaifinsa. An ci sojojin Ottoman, Timurlane ya kama Beyazid I, kuma İsa ya tsere zuwa yammacin Anatolia.