Incidentally, Naokatsu NAGAI who actively worked as a retainer of Ieyasu TOKUGAWA in the Sengoku period (the period of warring states) was a descendent of Tadamune OSADA, and it is said that he changed his surname to NAGAI on the order of Ieyasu who hated his original surname, OSADA.
また、戦国時代に活躍した徳川家康の家臣永井直勝は末裔で、長田の姓を嫌った家康の命により永井と改名したという。