Whakaotihia te rerenga e whai ake nei: Ko İsa tetahi o nga tama a Beyazid I, te sultan Ottoman. Ko tana whaea ko Devletşah Hatun, te tamahine a Süleyman Şah o Germiyanids me Mutahhara Abide Hatun, tamahine a Sultan Veled. I mahi a İsa hei kawana sanjak i Antalya ka whawhai i te
Te Pakanga o Ankara i te tau 1402 me tona papa. I hinga te ope Ottoman, i mauheretia a Beyazid I e Timurlane, ka mawhiti a İsa ki te hauauru o Anatolia.