Her father, Emperor Go-Mizuno was of the Iwakura family and invited Isshi Bunshu who was in the service of Chuwamonin to Sento Imperial Palace to conduct a Buddhist sermon, following which Ume-no-Miya also studied under Isshi before becoming a Buddhist nun in August of 1640 with the retired emperor's permission.
父の後水尾上皇は、岩倉家の生まれで中和門院に勤仕していた一糸文守を仙洞御所に招いて法話を講じさせているが、梅宮も一糸に師事して1640年（寛永17年）8月には上皇の許可を得て出家する。