徳川家宣
Tsunayoshi's first son Tokugawa Tokumatsu (1679–1683) died at the age of 4 due to illness. Therefore, Tsunayoshi was succeeded by his nephew, Tokugawa Ienobu, who was the son of his other brother, Tokugawa Tsunashige, the former Lord of Kōfu, which was a title Ienobu held himself before becoming "shōgun".