According to especially in 'Okahyosetsu' in the profile in "Dokai Koshuki", Tadamasa as well as his colleagues Tadatomo OKUBO and Masatake ABE were described as 'good military commanders.'
『土芥寇讎記』における人物評価、特に「謳歌評説」などでは忠昌その他大久保忠朝、阿部正武ら同僚を「善人の良将」と評している。