He became the ancestor of the Miura clan , which subsequently dominated eastern Sagami Province for the next several hundred years .
During the Heian period , local warlord Muraoka Tamemichi established Kinugasa Castle in 1063 .
Muraoka Tamemichi became the ancestor of the Miura clan , which subsequently dominated eastern Sagami Province for the next several hundred years .
During the Heian period , local warlord Muraoka Tamemichi established Kinugasa Castle in 1063 .