As Cloistered Imperial Prince Sonko's aunt, Princess Sananomiya Masako was the wife of Kishu Domain Shogun Yoshimune TOKUGAWA, approximately 100 temples in Kii Province became branch temples of Kaju-ji Temple.
法親王の叔母にあたる理子女王（さなのみやまさこ）が紀州藩出身の将軍・徳川吉宗の正室であった縁で、紀伊国の約100か寺が勧修寺の末寺となった。