Note to Macbeth, Act 2, Scene 1, line 55: "Tarquin's ravishing strides"
Wikipedia says: "According to Roman tradition, Lucretia . . , anglicized as Lucrece, was a noblewoman in ancient Rome whose rape by Sextus Tarquinius (Tarquin), an Etruscan king's son, was the cause of a rebellion that overthrew the Roman monarchy and led to the transition of Roman government from a kingdom to a republic."
This was a very famous incident, and Shakespeare wrote a poem about it, The Rape of Lucrece.
Tarquin and Lucretia