Hadj Omar

al-Ḥājj Umar III (ʿUmar bin Idrīs ), called Umar al-Maqdisi and Umar Fusami, was mai (ruler) of the Kanem–Bornu Empire in the early-to-mid 17th century, ruling approximately 1625–1645. Umar's reign saw the fall of Bilala-ruled Kanem, though the region was secured by the general Dala Afuno.

Life Umar was a son of mai Idris IV Alooma.

During Umar's reign, the Ottomans invaded Fezzan and sacked its capital, Murzuq. One of the princes of the Awlad Muhammad, Fezzan's ruling dynasty, fled to Bornu and sought refuge with the mai. The prince, Tahir, escaped with "twelve camels loads of gold," likely taken from the state treasury. On their way to Bornu, he had apparently blinded two of his own nephews, possibly to eliminate them as succession rivals. This angered the mai, who captured him, his followers, and his gold as they neared Bornu. Umar then tied Tahir and his men in sacks and drowned them in a river. the Wadai Sultanate drove the Bilala out of Kanem, which they had governed as vassals of the Kanem–Bornu Empire. The mai responded by sending the general Dala Afuno to secure the eastern side of Lake Chad. Dala was successful and was made viceroy of Kanem, establishing the so-called Dalatoa dynasty, which governed Kanem until the time of European colonisation.

Umar ruled for over a decade. He died at Ngazargamu and was succeeded as mai by one of his sons, either Biri V (whose historicity is disputed) or Ali III Walamma.