Motohisa YASUDA insists that FUJIWARA no Kagemichi in 'Mutsu Waki' corresponds to Kagemichi KAMAKURA and that it is reasonable to consider that his younger brother KAMAKURA Gon no kami (provisional governor) Kagenari was adopted by TAIRA no Tomonari, a son of TAIRA no Yoshimasa, as a son and his son was Gongoro Kagemasa.
安田元久は、「陸奥話記」の、藤原景通こそ鎌倉景通だとし、その弟、鎌倉権守景成が平良正の子、致成（ともなり）の養子となって、その子が権五郎景政とするのが最も妥当としている。