His eldest brother, Nobuyasu MATSUDAIRA died in the year when Hidetada was born and his older brother by a concubine, Hideyasu YUKI was adopted by Hideyoshi TOYOTOMI and later succeeded the Yuki clan.
長兄・松平信康は秀忠の生まれた年に死亡、庶兄の結城秀康は豊臣秀吉の養子に出されて、後に結城氏を継いだ。