Ikshvaku

Ikshvaku (Devanagari: इक्ष्वाकु) was the first king of the Ikshvaku dynasty and founder of the Sun Dynasty in Vedic civilization in ancient India. He is believed to be the son of Manu (the first man on earth), sired by the Sun God, Surya. Manu gained the knowledge of Dharma and humanity from Vivasvat (Surya). Thus, the lineage of the Sun Dynasty began.
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Ikshvaku Iksvaku (Sanskrit) The son of Vaivasvata-Manu -- progenitor of the present human race and son of Vivasvat (the sun). Ikshvaku was the founder of the solar race of kings (Suryavansa), reigning at Ayodhya at the commencement of the treta yuga (second age). It is said that he had a hundred sons, one of whom, Nimi, founded the Mithila dynasty.