In 1605, the founder Ieyasu stood down from his roles as shogun and family head and until his retirement use of the 'Tokugawa' surname was limited to one individual: his heir Hidetada TOKUGAWA.
初代家康が慶長10年（1605年）に将軍職と当主の座を辞して隠居するまでに徳川姓を称したのは、世子の徳川秀忠ただ一人であった。