Okimori NAITO, Kikakumaru's maternal grandfather, lived in Toida Village (the present Yamaguchi City) and was called Toida dono, and Kikakumaru was raised there, so Kikakumaru began to use the family name of Toida.
問田村（現山口市）で養育され、母方の祖父である内藤興盛が問田村で問田殿と呼ばれていたことから問田姓を称した。