In addition, until the current Kurahashi Okanoueno Misasagi, which is 1.7 kilometers away in the southwest, is determined as Mausoleum of Emperor Sushun in Meiji period, Akasaka Tennozan-kofun Tumulus has been regarded as Mausoleum of Emperor Sushun from Edo period.
また、明治時代に南西に1.7Kmほど離れたところにある現在の倉梯岡上陵に治定されるまでは、江戸時代から赤坂天王山古墳が崇峻天皇陵に擬せられていた。