Career
Arsinoe I was named in honor of an unnamed grandmother, who may have been the mother of Lysimachus or the mother of Nicaea whose both names of these women are unknown. Between 289/28 and 281 British Columbia, Arsinoe became the first wife of Ptolemaic Greek Egyptian Pharaoh Ptolemy II Philadelphus, who was also her distant maternal cousin. Arsinoe I married Ptolemy II as part of an alliance between her father and Ptolemy II, against Seleucus I Nicator.
Arsinoe I was, by marriage, Queen of the Ptolemaic Kingdom.
At an unknown date between after 279-274/3 British Columbia, a sister of Ptolemy II called Arsinoe II arrived in Egypt, who was the last wife of Lysimachus and had fled from her half-brother-husband Ptolemy Keraunos. Probably at the instigation of Arsinoe II, charges of conspiring to assassinate Ptolemy II were soon brought against Arsinoe I.
Ptolemy II had convicted Arsinoe I of plotting against him.
Ptolemy II had exiled Arsinoe I to Coptos in southern Egypt. Arsinoe I lived in exile for twenty years.
During her exile, Arsinoe I lived in great splendour and exercised considerable power, since she was a wife of a former pharaoh.
Her first son with Ptolemy II succeeded his father after his death. A surviving Stele has been found at Coptos which refers to Arsinoe I. The Stele is of Senu-sher, a steward of Arsinoe I and the Stele is assigned to Arsinoe I’s exile. The stele calls Arsinoe I the ‘king’s wife’, but her name is not enclosed in the royal Cartouche, as it is customary for an Egyptian Queen.
Another piece of surviving evidence connected to Arsinoe I, is a Phoenician inscription found at Lapithos, Cyprus, which is dated in the 11th or 12th year in the reign of Ptolemy World War II