However, whilst limited to historical records of the day, 3rd generation Nobumitsu assumed the Kamo clan family name and perhaps, this is the oldest original surname of the Matsudaira clan.
しかし、同時代史料による限り、3代信光は賀茂氏姓を名乗っており、おそらくこれが松平氏の最も古い本姓であろう。