 Collatinus married Lucretia, daughter of Spurius Lucretius Tricipitinus.According to legend, while Collatinus was away from home, his cousin, Sextus Tarquinius, son of the king, Lucius Tarquinius Superbus, came to his house by night.Forcing himself upon Lucretia, Sextus threatened to kill her, together with a slave, and tell her husband that he had caught her in the act of adultery with the slave, unless she should accede to his desire.