Teïspes (from Greek Τεΐσπης; in Old Persian: 𐎨𐎡𐏁𐎱𐎡𐏁 Cišpiš) lived from 675-640 BCE. He was the son of Achaemenes and an ancestor of Cyrus the Great. There is evidence that Cyrus I and Ariaramnes were both his sons. Cyrus I is the grandfather of Cyrus the Great, whereas Ariaramnes is great grandfather of Darius the Great.