From the Muromachi Period to the Edo Period, many family members served as negotiators with bakufu (Japanese feudal government headed by a shogun) and, in particular during the Edo Period, many buketenso yaku (Imperial official in charge of communication between the shogunate and the court) appeared.
室町時代から江戸時代にかけては幕府との折衝役を務める者が多く、特に江戸時代には武家伝奏役を多数輩出した。