For generations, the MIURA clan served the MINAMOTO clan, and played a major role in the defeat of the TAIRA clan; as a major powerhouse, they held significant influence in the Kamakura bakufu.
三浦氏は代々源氏に仕え、平氏打倒に大きな役割を果たしており、一大勢力として鎌倉幕府で重要な地位を占めていた。