And others have said Sadafuji was the father of both Moritoki ISE (Soun HOJO) and Kitagawa-dono (the wife of Yoshitada IMAGAWA), but a research seems to reveal that Moritoki's father was Morisada ISE who came from the Bicchu-Ise clan.
また伊勢盛時（北条早雲）と北川殿（今川義忠の室）の父親とも言われていたが、研究の結果盛時らの父は備中伊勢氏の一族伊勢盛定であることが明らかになってきたようだ。