The Mutsu-Hatakeyama held Nihonmatsu Castle in Mutsu and saw its power gradually diminish over the course of the sengoku period, until they were looked upon by their neighbors the [[Ashina clan|Ashina]] as essentially vassals. Nonetheless, allied to the [[Kasai clan|Kasai]], they clashed frequently with the [[Date clan|Date family]] They were largely destroyed at the hands of [[Date Masamune]] in [[1586]]. | The Mutsu-Hatakeyama held Nihonmatsu Castle in Mutsu and saw its power gradually diminish over the course of the sengoku period, until they were looked upon by their neighbors the [[Ashina clan|Ashina]] as essentially vassals. Nonetheless, allied to the [[Kasai clan|Kasai]], they clashed frequently with the [[Date clan|Date family]] They were largely destroyed at the hands of [[Date Masamune]] in [[1586]]. |