45 Strato, ruler of Sidon, thought of dying by his own hand, that he might not be the sport of the Persians, who were close by and whose alliance he had discarded for the friendship of the king of Egypt. But he drew back in terror, and eying the sword which he had seized, awaited in alarm the approach of the enemy. His wife, knowing that he must be immediately taken, wrested the weapon from his hand, and pierced his side. When the body was properly laid out she lay down upon it in the agony of death, that she might not violate her virgin troth in the embraces of another.
Xenophon, in describing the early years of the elder Cyrus, relates that when her husband Abradatas was slain, Panthea who had loved him intensely, placed herself beside the mangled body, then stabbed herself, and let her blood run into her husband's wounds. The queen whom the king her husband had shown naked and without her knowledge to his friend, thought she had good cause for slaying the king. She judged that she was not beloved if it was possible for her to be exhibited to another.
Rhodogune, daughter of Darius, after the death of her husband, put to death the nurse who was trying to persuade her to marry again. Alcestis is related in story to have voluntarily died for Admetus, and Penelope's chastity is the theme of Homer's song. Laodamia's praises are also sung by the poets, because, when Protesilaus was slain at Troy, she refused to survive him.
Source: Against Jovinianus (New Advent)