The terms 'Matsudaira-go fudai' and 'Iwatsu fudai' were both newly created by a scholar taking into consideration of the whole Matsudaira clan including the Anjo-Matsudaira family, thereby failing to be a historical term.
松平郷譜代、岩津譜代なる用語は安城松平家を含む松平氏全体を考えて研究者が新たに定義した用語で歴史的用語ではない。