According to "Kokon chomon ju" (A collection of Tales Heard, Past and Present), when Yoshimura MIURA, who was dominating as an authority at that time, saw Tanetsuna, as a young man, take a seat for more valuable person than the one Yoshimura took in the room for samurais in the Shogun's palace and said sarcastictically, 'that dog from Shimousa Province would not know where to find a bed,' then Tanetsuna is said to have fought back saying 'that dog of the Miura family would eat a friend,' and criticized Yoshimura's betrayal at the Battle of Wada.
『古今著聞集』によると、年若い胤綱が将軍御所の侍の間で、当時権勢を振るっていた重鎮の三浦義村の上座に座り、義村が「下総の犬めは寝場所を知らぬな」と皮肉ると、胤綱は「三浦の犬は友を食らうぞ」と切り返し、和田合戦での義村の裏切りを批判したという。