The Higashisono family was founded by Motonori HIGASHISONO (Jushiinojo - Junior Fourth Rank, Upper Grade, Headquarters of the Inner Palace Guards), the second son of Mototada SONO (or Mototo SONO).
東園家（ひがしそのけ）は園基任の次男東園基教（従四位上近衛府）を祖とする堂上家である。