The Otomo clan extended its influence in the late 5th century, during the age of OTOMO no Muroya and the reign of Emperor Yuryaku, reaching the height of its prosperity when OTOMO no Kanamura--the grandson of Muroya--became Oomuraji in the reign of Emperor Buretsu.
雄略天皇の時代の5世紀後半の大伴室屋（むろや）の時代より勢力を伸ばし、武烈天皇の代に孫の大伴金村（かなむら）が連（おおむらじ）になった時が全盛期であった。