Additionally, according to the genealogy of Tokisada TANEGASHIMA who was Chui's grandson and the founder of Kojigen school entitled "種子島氏支族美座対馬守時里二男国上氏系図" (the historical data found in 諸家系図文書四 of the 'Collection of the Writings of Sueyoshi Ijichi, Volume 3'), Chui's name was written as "Togo Hizen Shigenobu."
なお、外孫で古示現流開祖の種子島時貞の系図『種子島氏支族美座対馬守時里二男国上氏系図』（「伊地知季安著作集三」の『諸家系図文書四』の史料）では『東郷肥前重信』と表記されている。