Certification letter granting a territory of the branch castle issued by Tachibana Munetora (Muneshige)/ Private collection

When Tachibana Muneshige became the feudal lord of the Yanagawa domain; the Netabi and Komono clans, who had assisted the Tachibana family in wartime, became official vassals of the family. These two clans were put in charge of branch castles of the domain.