Horio Service Continues through the Oda and Toyotomi Successions

Horio Yoshiharu was already Hideyoshi’s retainer before Honnōji. He held a small grant at Nagahama from 1573 and gained further responsibilities as Hideyoshi rose within Nobunaga’s command. The attack in 1582 killed the Oda leader and heir, but Yoshiharu’s immediate service relationship with Hideyoshi continued.

Hideyoshi’s victory at Yamazaki and subsequent defeat of Shibata Katsuie expanded the authority under which Yoshiharu served. During later campaigns his holdings increased. He participated in the 1590 Odawara campaign, including the attack on Yamanaka Castle, and received Hamamatsu in Tōtōmi afterward.

After Hideyoshi’s death, Yoshiharu retired in 1599 and passed family leadership to Tadauji. In 1600 Tadauji joined the Eastern coalition, and the victorious settlement transferred the Horio house to Izumo and Oki. The father’s continuing Toyotomi service and the son’s later Tokugawa alignment belong to different successions. The new territorial base followed the son’s participation in a later war, after years of his father’s service to Hideyoshi.