He often used "Kuginuki-mon" (or "Kujonuki" which means an expert of attacking a castle) and it is regarded as proof that his ancestors had a relationship with the Sasaki clan because it is the same shape as "Hitotsumeyui-mon".
また釘貫紋（九城抜きともいう：城攻めの名手を表す）も多く用いている、一つ目結紋と同じ形なので先祖が佐々木氏関係者だったことの証拠とされる。