Among the muraji, one of the kabane (hereditary titles), the Otomo clan and the Mononobe clan, the most powerful clans who managed the military affairs and served as the Tomonomiyatsuko (the chief of various departments at the Imperial Court), became omuraji.
カバネ（かばね）の一つである連（むらじ）の中でも軍事を司る伴造出身の有力氏族である大伴氏（兵力）と物部氏（兵器）が大連となった。