After the death of Emperor Ninken, he attempted to assume the position himself, however OTOMO no Kanamura opposed Matori's intention and defeated him under the order of Ohatuse no wakasagi no mikoto (later day Emperor Buretsu); as a result, Matori killed himself and part of the Hegri clan head family went downfallen (there is also a rumor of survival).
仁賢天皇の没後、自ら大王になろうとしたが、これに不満を抱いた大伴金村は小泊瀬稚鷦鷯尊（後の武烈天皇）の命令を受け平群真鳥を討ち、真鳥は自害し平群本宗家の一部は滅んだ（生存説もある）。