Saemon no jo Yorimasa SHIMAZU, the fifth son of Rokurozaemon no jo Tadayori SHIMAZU (the fourth son of Tadatsuna) of the Echizen Shimazu Clan was appointed as Jito (manager and lord of manor) of Yono-go, Asai-gun County, Omi Province, where he became the founder of the Goshu Shimazu Clan.
越前島津氏系の島津六郎左衛門尉忠頼（忠綱四男）の五男・左衛門尉頼昌は、近江国浅井郡町野郷地頭に任じられ、江州島津氏の祖となる。