The term "Mitsuba-aoi," in many cases, refers to the crest design of the "Maru ni Mitsuba-aoi" (three leaves of hollyhock in a circle), which indicates the Tokugawa clan.
通常「三つ葉葵」といえば徳川氏の「丸に三つ葉葵」の紋を指すことが多い。