Timandra
The daughter
of king Tyndareus and Leda,
and sister of Helen of Troy,
Clytemnestra,
Castor and Polydeuces.
Tyndareus had been cursed by Aphrodite
for not sacrificing to her, and the curse was that the king's three daughters
would all be adulteresses.
Timandra was married to Echemus, son of Aeropus, who succeeded king Lycurgus
of Tegea. They had a son, Augeas, and according to some sources Timandra eventually
left her husband for Phyleus. This is not certain, though, but makes sense
since she was cursed to commit adultery.