The founder of the Kajuji family was Tsuneaki KAJUJI, the son of Sadasuke BOJO who lived during the period of the Northern and Southern Courts (Japan) (1336-1392).
南北朝時代(日本)の坊城定資の子・勧修寺経顕（南北朝時代(日本)）を勧修寺家の祖とする。