SB 10.51.14
sri-suka uvaca
sa iksvaku-kule jato
mandhatr-tanayo mahan
mucukunda iti khyato
brahmanyah satya-sangarah
Translation:
Sukadeva Gosvami said: Mucukunda was the name of this great personality, who was born in the Iksvaku dynasty as the son of Mandhata. He was devoted to brahminical culture and always true to his vow in battle.