 Complete the following phrase:  Naitō Yorinao was the seventh son of Naitō Yoriyasu. However, as all of his elder brothers died in childhood he became daimyō in 1859 on the retirement of his father. In 1860, he established a han school, the Shintoku-kan 進徳館 in Takatō. He served as part of the escort to Princess Kazunomiya during her travel to Edo to marry the Shogun Tokugawa Iemochi in 1861. Following the Namamugi Incident of 1862, during which British subjects were killed by the retinue of Shimazu Hisamitsu, he was ordered by the shogunate to deploy his troops to Yokohama to increase security. These troops subsequently accompanied the Shoguns forces during the 