There were cases in which even princes did not want to become emperor, in which the imperial families who had no chance to be a prince or princess asked him themselves to allow them to become his subject or in which the Imperial court asked them unilaterally to be his subject, thus the environment surrounding the clans separated from the Imperial household were always linked with the financial situation of the Imperial court.
親王ながら、皇位を望めない場合や、諸王にあって親王宣下を望めない皇族が自ら降下を求める場合と、朝廷から一方的に降下させる場合とがあり皇別氏族を取り巻く状況は朝廷の財政事情と常に連動する要素が強かった。