Ali ibn Ajlan explained

‘Alā’ al-Dīn Abu al-Ḥasan ‘Alī ibn ‘Ajlān ibn Rumaythah ibn Abī Numayy al-Ḥasanī (ar|علاء الدين أبو الحسن علي بن عجلان بن رميثة بن أبي نمي الحسني) was an Emir of Mecca.

He was killed on Wednesday, 7 Shawwal 797 AH (28 July 1395).

He is possibly the same person as Sharif Ali of Brunei.

References

• Book: Ibn Fahd. ‘Izz al-Dīn ‘Abd al-‘Azīz ibn ‘Umar ibn Muḥammad. Shaltūt. Fahīm Muḥammad. ar:غاية المرام بأخبار سلطنة البلد الحرام. Ghāyat al-marām bi-akhbār salṭanat al-Balad al-Ḥarām. 1988. Jāmi‘at Umm al-Qurá, Markaz al-Baḥth al-‘Ilmī wa-Iḥyā’ al-Turāth al-Islāmī, Kullīyat al-Sharīʻah wa-al-Dirāsāt al-Islāmīyah. Makkah. 2. 1st. Arabic. Composed before 1518.