But, after establishment of the Muromachi bakufu, another compellation 'oyakatasama' became commonly used for daimyo (a Japanese territorial lord) who was awarded yakata-go by the Ashikaga shogun family, while some of their senior vassals with yakata-go were called 'oyakata' or 'yakata' for short.
しかし、室町幕府成立以降、足利将軍家から屋形号を与えられた大名に対する敬称として「御屋形様」（おやかたさま）という尊称が定着した(屋形号を有する大名は主に御屋形様(おやかたさま)と尊称されたが、重臣の場合は御屋形、屋形と略称したケースもある。