Battle of Ipsus
In 302 BC, when the second alliance between Cassander, Ptolemy and Seleucus was made, Lysimachus, reinforced by troops from Cassander, entered Asia Minor, where he met with little resistance. On the approach of Antigonus he retired into winter quarters near Heraclea, marrying its widowed queen Amastris, a Persian princess. Seleucus joined him in 301 BC, and at the Battle of Ipsus Antigonus was defeated and slain. Antigonus' dominions were divided among the victors. Lysimachus' share was Lydia, Ionia, Phrygia and the north coast of Asia Minor.