According to the kamijima-ke bunsho (documents of the Kamijima family; it was the manuscript from the end of Edo Period) found in 1962 from an old house in Ueno city (present day Iga city) in Mie Prefecture, the third son of Gensei UESHIMA is Kanami, the master of sarugaku (form of theatre popular in Japan during the 11th to 14th centuries) or Noh and his mother is a sister of Masashige.
なお、昭和37年（1962年）、三重県上野市（現・伊賀市）の旧家から発見された上嶋家文書（江戸時代末期の写本）によると、伊賀、服部氏族の上嶋元成の三男が猿楽（能）の大成者である観阿弥で、その母は楠木正成の姉妹であるという。