Tojiko no irazume (刀自古郎女)
Tojiko no irazume (year of birth and death unknown) is a wife of Prince Shotoku. It is said that her father is SOGA no Umako and her mother is a daughter of the Mononobe clan.
Father: SOGA no Umako
Mother: the daughter of the Mononobe clan
Elder brother: Soga no Emishi
Elder sister: Kawakami no irazume (hin [imperial wife of the lowest rank] of Emperor Sushun)
Children: three sons and a daughter; Prince Yamashiro no oe, Prince Zai, Prince Hioki, Princess Kataoka)
"Nihonshoki" (Chronicles of Japan) doesn't describe that Prince Yamashiro is the child of Prince Shotoku.
`Prince Shotoku' - one of the manga works created by Ryoko YAMAGISHI which contains the Prince Shotoku as a main character. Tojiko no irazume is depicted as a sister who loved her biological elder brother, Emishi.
Hokki-ji temple, the temple of Nara Prefecture. "Nihon genho zenaku ryoiki" (set of three books of Buddhist stories, written in the late 8th and early 9th century, usually referred to as the Nihon Ryouiki) describes the site of Prince Shotoku's residence and the place of Tojiko's residence.