Shihab al-Din 'Umar al-Suhrawardi

Abu Bakr Abdullah ibn Uthman Abi Quhafa was the senior companion and was, through his daughter Aisha, a father-in-law of the Islamic prophet Muhammad, as well as the first Caliph of the Rashidun Caliphate. He is known with the honorific title "al-Siddiq" by Sunni Muslims.

Abū al-ʿAbbās Aḥmad ibn al-Hasan al-Mustaḍīʾ, better known by his laqab al-Nāṣir li-Dīn Allāh or simply as al-Nasir, was the Abbasid caliph in Baghdad from 1180 until his death. His laqab literally can mean The One who Gives Victory to the Religion of God. He continued the efforts of his grandfather al-Muqtafi in restoring the caliphate to its ancient dominant role and achieved a surprising amount of success as his army even conquered parts of Iran. According to the historian, Angelika Hartmann, al-Nasir was the last effective Abbasid caliph.

The Abbasid dynasty or Abbasids were an Arab dynasty that ruled the Abbasid Caliphate between 750 and 1258. They were from the Qurayshi Hashimid clan of Banu Abbas, descended from Abbas ibn Abd al-Muttalib. The Abbasid Caliphate is divided into three main periods: Early Abbasid era (750–861), Middle Abbasid era (861–936) and Later Abbasid era (936–1258). A cadet branch of the dynasty also ruled as ceremonial rulers for the Mamluk Sultanate as Caliph (1261–1517), until their conquest by the Ottoman Empire.