Although his older brother, Tadatsune, was given the sanction of 'kaieki' in 1725, Tadayoshi was granted 7,000 koku and were also allowed to maintain their family name as a special case because their family was renowned.
享保10年に兄忠恒が改易となったが、名門と言うことで忠穀に7000石が与えられ家名の存続を認められた。