Ptolemy VI Philometor was Ptolemy V's eldest
son. He is the legitimate heir. Now he is the acting king though
he's only a child.
His mother, Cleopatra
I, acted as his regent but died after 4 or 5 years. Thus two
greedy officials, Eulaeus and Lenaeus declared themselves as his
Philometor married his sister Cleopatra II. His guardians, foolishly,
launched an incompetent war against Antiochus IV, the Syrian king.
Their army were defeated and Philometor was captured by Antiochus
in 170 BC.
The Egyptians thus realized the vacuum in the throne and declared
Philometor's brother, Ptolemy VIII Euergetes II, as the incumbent
king. They also declared Cleopatra II, Euergetes's sister and sister
in law (at the same time), as the queen.
Ptolemy VIII was cruel to the people and intolerant. This incited
the people to demand Philometor's return.
Rome, now having the upper hand, finally intervened and the two
brothers agreed to split the Egyptian kingdom between them: Philometor
ruled Egypt and Euergetes ruled Cyrenaica (part of the Egyptian
empire at that time).
Philometor ruled afterwards for prosperous quarter century. He died
in a battle with Syria on a campaign intended to support his daughter
Cleopatra Thea there. Philometor left a legitimate heir called Ptolemy
The new king ruled under the regency of his mother Cleopatra II.
But his uncle, Euergetes, coveted Egypt's throne, particularly after
the death of his brother. Euergetes married his sister, Cleopatra
II, Philopator's mother, and had Philopator killed right after the
Consequently, Euergetes became the sole monarch
of Egypt in 145 BC. He then ruled until his death in 116 BC. He married
his niece, by his sister-wife Cleopatra II, also called Cleopatra
From Cleopatra II, Euergetes begot a son called Memphites, and from
Cleopatra III he begot two sons who will rule simultaneously after
IX Soter II and Ptolemy X Alexander.
Resentment rose against Euergetes due to his extreme cruelty so
he had to flee Egypt to Cyprus taking Cleopatra III with him and
his 3 sons.
In his absence Cleopatra II declared herself as the sole ruler of
Egypt. Seeking revenge, Euergetes killed his own son Memphites and
sent his corpse to Cleopatra II in Egypt.
Euergetes became powerful enough to invade Egypt. So he successfully
retook the throne and Cleopatra had to flee to Syria.
Euergetes died in 116 BC, leaving his wife Cleopatra as the ruler
of Egypt with whoever she chooses from her sons.