Short answers, pulled from the story.
Lucretia was a Roman noblewoman of the late 6th century BC, the daughter of magistrate Spurius Lucretius and the wife of Lucius Tarquinius Collatinus. She was described by the historians Livy and Dionysius of Halicarnassus as an exemplar of Roman virtue and marital devotion.
After Sextus Tarquinius raped Lucretia around 508 BC, her suicide and the oath sworn over her body by Lucius Junius Brutus and others launched a rebellion that expelled the Tarquin royal family. The curiae voted for a republican form of government with two consuls, and Brutus and Lucius Tarquinius Collatinus became the first two consuls.
The primary sources are the Roman historian Livy, writing in Ab Urbe Condita around 25-8 BC, and the Greco-Roman historian Dionysius of Halicarnassus, both writing approximately 500 years after the events. The historian Dio also preserves a version of the story. There are no contemporary sources.
Dionysius of Halicarnassus places the event at the beginning of the sixty-eighth Olympiad, when Isagoras was archon at Athens, corresponding to 508/507 BC. Most historians accept this approximate date, though the exact year is debatable within a range of about five years.
Shakespeare wrote a long narrative poem, The Rape of Lucrece, in 1594, drawing on Livy and Ovid. He also referenced Lucretia in Titus Andronicus, As You Like It, Twelfth Night, Macbeth, and Cymbeline.
Major artists who depicted Lucretia include Titian, Rembrandt, Dürer, Raphael, Botticelli, Artemisia Gentileschi, Lucas Cranach the Elder, and Hendrick Goltzius, among others. The subject has been a continuous theme in Western art since the Renaissance.