The Yamana clan in Muraoka, Shichimi County (present Muraoka, Muraoka Ward, Kami Town, Mikata County, Hyogo Prefecture), was a powerful daimyo, one of the families of Sankanrei (three families in the post of kanrei, or shogunal deputy) and Shishiki (four major feudal lords) in the Muromachi bakufu.
七味郡村岡（現・兵庫県美方郡加美町村岡区村岡）の山名氏は、室町幕府の三管領四職の一家であった有力大名であった。