Also known as: Kamechiyo

20th head of the Date Clan who took that position at the age of two after his father, Date Tsunamune, was disposed. His uncles Date Munekatsu and Date Muneyoshi acted as regents. After ten years of conflict and discontent, Aki Muneshige, a relative of the Date, made a formal complaint to the capital. Aki Muneshige was killed during the investigations, but Munekatsu and Muneyoshi were punished and Tsunamura confirmed as the proper head of the clan.