Otaibah
The Otaibah (, also spelled Otaiba, Utaybah) is one of the biggest Arab tribes originating in the Arabian Peninsula. Their distribution spans throughout Saudi Arabia, especially in Najd. and the Middle East. The Otaibah are descended from the Bedouin. They trace back to the Mudar family and belong to the Qays ʿAylān confederacy through its previous name, Hawazin. Genealogy Research of the lineage of northern tribes may began with Adnan (instead of Ishmael), as passed on by oral tradition. He is the common ancestor of the modern Otaibah, Annazah, Tamim, Abd al-Qays, and Quraysh tribes. Although Adnan is at the head of the tribal genealogy, genealogists and poets typically refer to two of his descendants: his son Ma'ad (a later collective term for all north Arabian tribes) and his grandson Nizar, ancestor of Rabi'ah and Mudar. Mudar, the son of Nizar, fathered ʿAylān al-Nās (the ancestor of Hawazin and Otaibah). The Hawazin is another tribe related to the Otaibah. The tribe's common ancestors are Otaibah, Guzayah, Banu Jusham, Sa'd, Bakr, Hawāzin, Manṣūr, ʿIkrima, K̲h̲aṣafa, Qays ʿAylān, Mudir, Nijzar, Ma'ad and Adnan of the Ishmaelites. The tribe is primarily found in Saudi Arabia, Kuwait, Qatar, and the United Arab Emirates. According