In his later years, he started inscribing as 'Musashi Daijo Fujiwara Tadahiro' on his swords after he received the title of Musashi Daijo and changed his name to 'Tadahiro'.
晩年は武蔵大掾を受領し名を「忠広」と改め「武蔵大掾藤原忠広」と切る。