In the Directory of Imperial Tombs, referring to the Tomb of the Prince (located in Nikaido, Kamakura City and now managed by the Imperial Household Agency), there is a pronunciation guide that says the letters inscribed on the gravestone are pronounced "morinaga shinno no haka" (Tomb of the Prince Morinaga), the same annotation as at Kamakura-gu.
また、鎌倉市二階堂にあり現在宮内庁が管理している「護良親王墓」に関しても大正4年の『陵墓要覧』のなかに「もりながしんのうはか」とのルビがあり、鎌倉宮と同じく「もりなが」と読んでいる。