BerenīcÚ in Harpers Dictionary of Classical Antiquities
Called by some authors Cleopatra , was the only legitimate child of Ptolemy Lathyrus, and ascended the throne after the death of her father, B.C. 81. Sulla , who was at that time dictator, compelled her to marry, and share her throne with, her cousin, who took the name of Ptolemy Alexander. She was poisoned by the latter only nineteen days after the marriage.