9. She Had A Sibling Rivalry

While Anne was off trying to resist her cousin's advances, her older sister Mary Boleyn was making quite a splash in King Henry's court—and proving herself to be quite the rival to Anne's beauty. Case in point: Although Henry was currently married to Catherine of Aragon, he quickly took Anne's sister on as his mistress. Um, ew. But it gets even grosser.

10. Her Mother May Have Been Her Competition

There were persistent rumors at the time that Henry had bedded not just Mary, but also the Boleyn matriarch, Lady Elizabeth Howard. When accused of this one, Henry protested, "Never with the mother," which still pretty much confirms his penchant for the Boleyn girls. Whatever the truth, Anne took one look at her sister's antics and decided she wanted to go to court, too. Only, it didn't go the way you think it would.