was a daimyō (lord) of Izumo Province.
He was the eldest son of Haruhisa and he was given the childhood name of . After his father's sudden death in 1560, he became the head of the clan to continue the fight against the Mōri clan. While besieged in Gassantoda Castle, Yoshihisa had a retainer, Uyama Hisakane executed after fearing betrayal. This caused most of his remaining troops to desert and on 1566, he surrendered to Mōri Motonari. Yoshihisa was permitted to become a monk and was held captive at Enmeiji. As a monk, Yoshihisa changed his name to Yurin (友林). After Mōri Terumoto became the head of Mōri clan, he became a retainer under Terumoto.
Family Father: Amago Haruhisa Mother: daughter of Amago Kunihisa Wife: daughter of Kyogoku clan Son: Amago Tomohisa Adopted son: Amago Motosato (1572–1622)
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