Horio Tadauji Receives Izumo and Oki after Sekigahara

The Horio had served Hideyoshi and held Hamamatsu. Tadauji, who had inherited the family headship before 1600, supported Ieyasu as disputes divided the Toyotomi government. His recognized service in the victorious eastern coalition brought a transfer to Izumo and Oki, conventionally assessed at about 240,000 koku in assessed rice yield.

Tadauji entered Toda Castle with his father Yoshiharu. The reward transferred responsibility for a substantial mainland province and island territory to their household. Existing communities remained, while the new lord had to allocate holdings among his retainers and establish his authority there.

A surviving list dated the twenty-seventh day of the third Japanese month in 1601 promises land to six retainers. Other documents record grants and surveys after entry. They show the practical work that followed the military reward. Tadauji died in 1604 before the planned relocation to Matsue was completed; Yoshiharu subsequently oversaw construction for the surviving young heir. Toda was the immediate postwar base, and Matsue belonged to the later stage of Horio rule.