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Arsinoe III Thea Philopator
Queen of Egypt
Dinastia tolemaica, arsinoe III, octodracma, 204-203 ac ca.JPG
Obverse of coin depicting Arsinoe III
Born c. 246–245 BC
Died 204 BC
Spouse Ptolemy IV
Issue Ptolemy V Epiphanes
Full name
Arsinoe III Thea Philopator
Dynasty Ptolemaic
Father Ptolemy III
Mother Berenice II

Arsinoe III Philopator (Ancient Greek: Ἀρσινόη ἡ Φιλοπάτωρ, which means "Arsinoe the father-loving", 246 or 245 BC – 204 BC) was Queen of Ptolemaic Egypt in 220 – 204 BC. She was a daughter of Ptolemy III and Berenice II. She was the first Ptolemaic queen to bear her brother's child. Arsinoe and her spouse Ptolemy IV were loved and well respected by the Egyptian public.


Between late October and early November 220 BC, she was married to her younger brother, Ptolemy IV. She took an active part in the government of the country, at least in the measure that it was tolerated by the all-powerful minister Sosibius.

In 217 BC, she accompanied Ptolemy IV along with 55,000 troops at the Battle of Raphia in Palestine against Antiochus the Great with 68,000 troops. Arsinoe may have commanded a section of the infantry phalanx. Both sides employed cavalry, elephants, and specialized troops such as archers, as well as traditional Macedonian phalanx. When the battle went poorly, she appeared before the troops and exhorted them to fight to defend their families. She also promised two minas of gold to each of them if they won the battle, which they did.

In summer, 204 BC, Ptolemy IV died. His two leading favorites, Agathocles and Sosibius, fearing that Arsinoe would secure the regency, had her murdered in a palace coup before she heard of her husband's death, thereby securing the regency for themselves.


  • Ptolemy V


Eratosthenes wrote a manuscript called the Arsinoe, which is lost, the subject being a memoir of the queen. It is quoted by many ancient scholars.

Portraits of her likeness are also rare, but do exist in the forms of a bust of marble, and another of bronze.

See also

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