Argishti I the king of Urartu
Argishti I -Alternate transliterations of the name include Argishtis, Argisti, Argišti, and Argishtish- was the sixth known king of Urartu, reigning from 786 BC to 764 BC -He was the son and the successor of Menua, and was succeeded by his son Sarduri II- founded the citadel of Erebuni in 782 BC, which is the present capital of Armenia, Yerevan, and the fortress of Argishtikhinili in 776 BC.
He continued the series of conquests initiated by his predecessors. He was involved in several inconclusive conflicts with the Assyrian king Shalmaneser IV. He conquered the northern part of Syria and made Urartu the most powerful state in post-Hittite Asia Minor. He also expanded his kingdom north to Lake Sevan, conquering much of Diauehi and the Ararat Valley.