Both Uraike in the present Yoshinogawa City (former Donari Town), Tokushima Prefecture, and Furuike in the present Miyoshi City (former Ikeda Town), Tokushima Prefecture, still exist, and were built by Furutsugu, according to folklore.
現存する浦池（徳島県吉野川市（旧土成町）内）と古池（徳島県三好市（旧池田町(徳島県)）内）は、古嗣が築造したとの伝承が残っている。