 Tammaritu II was the son of Tammaritu I and the successor of Ummanigash, his uncle.After a failed attack in 652 by then Elamite king Ummanigash against the Assyrian Empire, Tammaritu II rose to power in a coup.Tammaritu continued Ummanigash's policy of supporting the Babylonian ruler Shamash-shum-ukin against the Assyrian king Ashurbanipal.