Ed also known as Bulgarios, Czech, Horiv, Belacarpat and Belacuman refers to Avarios the Malkar (Maghar) brother of Edemen and son of the Dulo clan's Csaba and his Hvarezmi wife.

Ed was the Iverian son of Csaba and the ancestor of the Kazarig peoples. His descendant was Kubrat and Kotrag the ancestor of Ugyek and Almos who ruled in Bashkortostan according to the Җәгъфәр тарихы.