Cai Wenji (b. 177), also known as Cai Yan, was a Han Dynasty poet and composer. She was the daughter of Cai Yong, also a musician. Her courtesy name was originally Zhaoji, but it was changed to Wenji during the Jin Dynasty to avoid a naming conflict with Sima Zhao. She spent part of her life as a prisoner of the Xiongnu tribe, until Cao Cao paid a heavy sum to redeem her in 207. Wikipedia
The definitive Wikipedia entry for Cai Wenji. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Cai_Wenji