Yashuhide was a retainer of the Hôjô family and held land in Izu province, where he was an administrator. He served in a number of campaigns for Hôjô Ujiyasu and Ujimasa. During the Odawara Campaign (1590), he was attacked by waterborne troops under Chosokabe Motochika and Wakizaka Yasuharu and was compelled to surrender. The Shimizu afterwards became retainers of Yûki Hideyasu.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005