Helen of Troy

"The face that launched a thousand ships"
Helen of Troy was the daughter of Zeus and Leda, she was given by Aphrodite to Paris after he gave her the Apple of Discord. Helen was married to Menelaus who became King of Sparta and was later abducted or seduced by Paris. This seduction led to a war lasting 10 years and resulted in the destruction of the Trojan royal family. 
Today Helen's name has been attached to the idea of beauty and danger. 
It was written about in Homer's "The Iliad"