Aeschylus
Deathly Hallows begins with a pair of epigraphs, one from Quaker leader William Penn's More Fruits of Solitude and one from Aeschylus' The Libation Bearers. "I really enjoyed choosing those two quotations because one is pagan, of course, and one is from a Christian tradition", Rowling said. "I'd known it was going to be those two passages since 'Chamber' was published. I always knew if I could use them at the beginning of book seven then I'd queued up the ending perfectly. If they were relevant, then I went where I needed to go. They just say it all to me, they really do."
Read more about this topic: Harry Potter Influences And Analogues, Influences