According to the explorer Richard Francis Burton, "Fiqi Umar" crossed over from the Arabian Peninsula to the Horn of Africa ten generations prior to 1854, with his six sons: Umar the Greater, Umar the Lesser, the two Abdillahs, Ahmad and Siddik.[35] According to Hararis, they also consist of seven Harla subclans: Abogn, Adish, Awari, Gidaya, Gaturi, Hargaya, and Wargar.[36] The Harari were previously known as "Adere", although this term is now considered derogatory.[37]