Female Arsinoe bint Lysimachus

Arsinoe bint's mother is Nicaea bint Antipater.  She is an only child.

Arsinoe bint's family with Ptolemy Philadelphus Ptolemy

Ptolemy Philadelphus and Arsinoe bint are married (further details are not known). They have two sons and a daughter, named Berenice Syra, Lysimachus ben and Ptolemy Euergetes.