| At the end of the Sengoku (Warring States) period (Japan) they lived in Irako Village, Atsumi County, Mikawa Province (present Tahara City of Aichi Prefecture), so they changed their family name to IRAKO. |
戦国時代 (日本)の末に三河国渥美郡伊良子村（現在の愛知県田原市）に住んでいたため、伊良子姓に変更する。 |