Sadyattes
Sadyattes ( ; reigned c. 637 – c. 635 BC) was the third king of the Mermnad dynasty in Lydia, the son of Ardys and the grandson of Gyges of Lydia. Reign. Sadyattes came to power during period of severe crisis that Lydia was facing because of several waves of invasions by the Cimmerians, a nomadic people from the Pontic steppe who had invaded the Levant. The Cimmerians attacked Lydia several times but had been repelled by Sadyattes's grandfather, Gyges, but in 644 BCE, the Cimmerians attacked Lydia for the third time, led by their king Lygdamis. The Lydians were defeated , Sardis was sacked, and Gyges was killed, following which he was succeeded by his son, Ardys, who was the father of Sadyattes. In 637 BCE, that is in Ardys's seventh regnal year, the Thracian Treres tribe who had migrated across the Thracian Bosporus and invaded Anatolia, under their king Kobos, and in alliance with the Cimmerians and the Lycians, attacked Lydia. They defeated the Lydians again and for a second time sacked the Lydian capital of Sardis, except for its citadel. It is probable that Ardys was killed during this Cimmerian attack. Sadyattes's reign was even more short -lived than that of his father Ardys: although Herodotus claimed that Ardys had reigned for twelve years, modern estimates give him a much shorter reign of only two years. Little is know about the reign of Sadyattes except that he began a war with the Ionian Greek maritime city of Miletus. Sadyattes died in 635 BCE and was succeeded by his son Alyattes, who would transform Lydia into a powerful empire. It is possible that, like his grandfather Gyges and maybe his father Ardys as well, he died fighting the Cimmerians. He was succeeded by his son Alyattes, who continued  his war against Miletus. Aftermath. Soon after 635 BCE, with Assyrian approval and in alliance with the Lydians, the Scythians under their king Madyes entered Anatolia, expelled the Treres from Asia Minor, and defeated the Cimmerians so that they no longer constituted a threat again, following which the Scythians extended their domination to Central Anatolia until they were themselves expelled by the Medes from Western Asia in the 590s BCE. This final defeat of the Cimmerians was carried out by the joint forces of Madyes, who Strabo credits with expelling the Cimmerians from Asia Minor, and of Sadyattes's son , the king Alyattes of Lydia, whom Herodotus and Polyaenus claim finally defeated the Cimmerians.