Ramba uchiverenga ndima iyi - İsa aiva mumwe wevanakomana vaBeyazid I, mambo weOttoman. Amai vake vaiva Devletşah Hatun, mwanasikana waSüleyman Şah weGermyanids naMutahara Abide Hatun, mwanasikana waSultan Veled. İsa akashanda semutongi weSanjak muAntalya uye akarwa muhondo yeAnkara
muna 1402 nababa vake. Mauto eOttoman akakundwa, Beyazid I akabatwa naTimurlane, uye İsa akatizira kumadokero kweAnatolia.