Hirotsuna HINO was a low-ranking court noble in Kyoto and Kakushin-ni was the daughter of Shinran, the hereditary monshu (head of a Buddhist sect) and honshu (chief priest) of the Hongan-ji Temple (the largest school of the Jodo Shinshu sect of Buddhism).
日野広綱は京都の下級公家、覚信尼は浄土真宗の多数派である本願寺の門主（法主）を世襲した親鸞の娘である。