A record shows the name 'Takeda Buzen no kami Tsunenobu' as a senior vassal of the Inaba-Yamana clan, who had fought against the Amago clan at the Battle of Hashizugawa in an attempt to support Munekatsu NANJO of Hoki Province in October, 1546, but it is unknown whether that person was identical with Kuninobu TAKEDA (other theory sees they were the same person).
1546年10月、伯耆国の南条宗勝を助けて橋津川の戦いで尼子氏と戦った因幡山名氏の重臣として「武田豊前守常信」の名が記録に残るが、武田国信と同一人物だったかは不明（同一人物と見る説も存在する）。