A stone statue called Saruishi, which is placed in the adjoining tomb of Kibitsuhime Okimi, was dug out from the rice field (Koaza Ikeda) just to the south of Umeyama Tumulus in the Edo period and had been placed beside the tumulus since then, but in the early Meiji period it was moved to the present spot.
隣接する吉備姫王墓に猿石と呼ばれる石像物が置かれているが、これは江戸時代に梅山古墳のすぐ南の田（小字池田）で掘り出されて古墳のかたわらに置かれていたもので、明治初期に現在の場所に移された。