TAIRA no Masakado also served as the householder of FUJIWARA no Tadahira who was Sadaijin (Minister of the Left) at the time, and he became Takiguchi by the Minister's recommendation, and called himself Kojiro TAKIGUCHI.
平将門も当時左大臣だった藤原忠平の家人として仕え、その推挙により滝口となり、滝口小二郎と名乗っていた。