"But expanded this by claiming direct descent, through his mother Laodice VII Thea (b. c. 122 BCE), from Seleucus I Nicator (r. 305-281 BCE), founder of the Seleucid Empire, and Ptolemy I Soter (r. 305/304-282 BCE) of the Ptolemaic Dynasty of Egypt, as well as others who had served as generals of Alexander the Great. He thereby established himself as a Greco-Persian monarch and assumed the title of 'Antiochus, the just god, friend of Romans and Greeks', which pleased Rome while, at the same time, arranging the marriage of his daughter, Laodice, to King Orodes II of Parthia (r. 57-37 BCE) and securing peace with the east."