The origin of the family name SAKAMOTO came from a place called SAKAMOTO (Sakamoto, Otsu city, Shiga prefecture at present) that was a domain of the AKECHI family before the Honnoji no hen incident.
坂本姓の由来は、本能寺の変以前、明智氏所領であった坂本（現滋賀県大津市坂本）に由来している。