The Crown of Isis

246 BCE. In order to seal a political alliance, Princess Berenike, sister of Pharaoh Ptolemy III, is betrothed to King Antiochos. However, Antiochos must first repudiate his lawful spouse and Queen Laodike, as we can expect, will not accept that decision gracefully.
The minute details of this chronicle are historically documented. Even the caprice of the weather of the year 246 BCE is true: it did snow in Syria and the rose bushes bloomed in Thebes that winter...