Nobukiyo, Nobutaka's son, was the Emperor Gotoba's uncle, and Nobukiyo's daughter became the legal wife of MINAMOTO no Sanetomo, Shogun of the Kamakura bakufu (Japanese feudal government headed by a shogun); as a result, the Bomon family came to hold enormous influence over both the imperial house and the bakufu.
信隆の子の信清は後鳥羽天皇の叔父にあたり、また信清の娘は鎌倉幕府将軍源実朝の正室となったことから、坊門家は皇室・幕府いずれに対しても大きな影響力を持つようになった。