Nobuchika KATAOKA, who was his father and held the title of daiguji (high priest of a great shrine) of Kashima-myojin in Hitachi Province, became a follower of Shinran, and made Junshin a disciple of Shinran.
父の片岡信親は、常陸国鹿島明神の大宮司であったが親鸞に帰依し、順信を弟子とさせた。