aligned with the natural terrain, and the central bailey located next to the current central bailey area. Hidenaga appointed Kuwayama Shigeharu as castellan, and remained at Kōriyama Castle in Yamato. Following the Battle of Sekigahara, Tokugawa Ieyasu reassigned the province in 1600 to Asano Yoshinaga. Asano greatly expanded Wakayama Castle, constructing a three-story tenshu connected to three corner yagura by corridors. This tenshu had the same shape as the current tenshu, but was black instead of white. The overall dimensions of the castle were expanded to the northeast and the daimyō residence was relocated to this new enclosure, which was further protected by a double series of moats, utilizing the nearby Kinokawa River. In 1615 the castle was attacked by forces loyal to Toyotomi Hideyori, who were trying to end the siege of Osaka. Ono Harunaga, Hanawa Naoyuki and Okabe Noritsuna led 3000 men from Osaka against the castle which was held by Asano Nagaakira with 5000 men, In the Battle of Kashii Hanawa and Okabe were killed, and Ono was forced to flee back to Osaka. After the final defeat of the Toyotomi clan, the Asano clan was transferred to Hiroshima Domain, which had been confiscated from Fukushima Masanori in 1619. The Asano were replaced as daimyō of Kishū Domain by Tokugawa Yorinobu, the tenth son of Tokugawa Ieyasu, and the founder of the Kii Tokugawa clan, who were given a special status as one of the cadet branches of the clan authorized to provide a successor to the office of Shogun should the main line fail to produce an heir. Due to its strategic location, Kishū Domain was also expected to watch over the Kansai region and areas further west for rebellion, and to hold the area until reinforcements could arrive from Edo. Tokugawa Yorinobu was a noted military commander who had distinguished himself at the Siege of Osaka. He rescued many ronin in the aftermath of the battle by hiring them for the domain and further expanded Wakayama Castle with a new northwest enclosure, and greatly strengthening its walls. He also had plans to expand the castle to the south; however, was forced to curtail these plans as rumors began to circulate that he was planning a rebellion. The issue was caused by the 1651 Keian Uprising in which the military strategist Yui Shōsetsu attempted to overthrow the Tokugawa shogunate and used Yorinobu's name without permission. Although