Or, after Yasuchika and Chikauji MATSUDAIRA entered Matsudaira Village they worshiped at Kamo-myojin Shrine to pray and then started to use the aoi-mon as his family crest.
あるいは、松平親氏、泰親、が松平村に入りし後、賀茂明神に祈願し家紋とした。