Sosibius

He was rebuffed by the Ptolemaic governor of the region, Theodotus, and forced to turn east as a result of the revolt of his satrap of Media, Molon,[10][11] but in spring 219 BC he attacked once more, beginning the Fourth Syrian War and quickly captured most of Coele-Syria.

[12][11] Polybius says that this occurred because Ptolemy had given himself up to luxury, leaving all administration of the kingdom to Sosibius, who neglected the finances and military defences.

[13] In the midst of this, there was a revolt in Alexandria, led by Cleomenes III of Sparta, which Polybius presents as having been a serious threat to Ptolemy IV's regime.

In 219 BC, while Ptolemy IV was at Canopus, Cleomenes III broke free and attempted to lead an armed uprising against Sosibius.

[16][11] Sosibius and Agathocles used the cease fire to whip the Ptolemaic army into shape, while Antiochus III used it to prepare for a new offensive.

In early 218 BC, the Seleucid king obliterated the Ptolemaic forces at Berytus on land and at sea, opening the way for the invasion of Coele Syria.

The Ptolemaic army defeated Antiochus decisively in battle at Raphia on 22 June 217 BC and Ptolemy sent Sosibius to organise the peace treaty that ended the war.

[18][11] Ptolemy IV retained the territories that he had held at the start of the war except, apparently, Seleucia Pieria, and he received an enormous sum of gold.

In October or November 205 BC, the leader of the southern revolt captured the city of Thebes and had himself crowned Pharaoh, taking the name Horwennefer, rendered in Greek sources as Hugronaphor.