qnli question: Who was the son of Amphion and Niobe? sentence: Apollo was called Ismenius (/ɪzˈmiːniəs/ iz-MEE-nee-əs; Ἰσμηνιός, Ismēnios, literally "of Ismenus") after Ismenus, the son of Amphion and Niobe, whom he struck with an arrow.