Penelope, cousin of Clytemnestra and Helen by virtue of her father, Icarious of Sparta. She was queen in Ithaca after Odysseus had won the right to marry her by virtue of a foot race. Understanding of the age tells us that she was no more than 14 or 15 years old when she was married which, considering she had only one son by Odysseus (Telemachus), makes her no more than 36 when the Odyssey is taking place.
Penelope is usually placed in high regard as, having been placed in virtually the same position as Clytemnestra, she remains faithful to her husband. She was described as extremely beautiful, smart, capable of great political skill, and the only individual in the Odyssey to match Odysseus in cunning.
Check out this brief article from the University of Waterloo and learn more about the “ever-faithful” Penelope of Ithaca.