was a daimyo of Satsuma Province and the eldest son of Shimazu Takahisa. His mother was a daughter of Nyurai'in Shigesato (入来院重聡), Yukimado (雪窓). Shimazu Yoshihiro and Shimazu Toshihisa are his brothers. His childhood name was Torajumaru (虎寿丸) but went by the name of Matasaburo (又三郎). On his genpuku, he took the name of Tadayoshi(忠良) but after receiving a kanji from the shogun Ashikaga Yoshiteru, changed to Yoshitatsu (義辰). He later changed his name to Yoshihisa. He married an aunt and after her death, married a daughter of Tanegashima Tokiaki.