Although it is commonly believed that Ieyasu TOKUGAWA founded the Edo shogunate, there is another theory that suggests an imposter took the place of Ieyasu TOKUGAWA at some stage of his life.
徳川家康の影武者説（とくがわいえやすのかげむしゃせつ）、は江戸幕府を開いた徳川家康の生涯は通説で考えられているものと異なり、人生のいずれかの段階で別人と入れ替わったという俗説。