Have you ever read Ovid's Metamorphoses? It was Shakespeare's favorite book. He references it multiple times throughout his plays; in one comedy (Cymbeline) the heroine stays up late studying it - which is so hilarious and cute, Shakespeare writes a heroine who studies his favorite author.

Anyway, the story of Philomel is the origin of Lavinia's tragedy. Philomel specifically was often mentioned by Shakespeare; the story, like, plagued him.