Sweet Serenei

"A Lysene beauty from an ancient but impoverished line, brought to court by Lord Jon Hightower, the new Hand. Serenei was the most beautiful of Aegon[IV]'s mistresses, but she was also reputed to be a sorceress. She died giving birth to the last of the king's bastard children, a girl called Shiera Seastar who became the greatest beauty in the Seven Kingdoms"
- The World of Ice and Fire, George R.R. Martin