Born: c. 1502, Died: Jun 29, 1537
Known for: Not marrying Anne Boleyn; being called "the Unhappy Earl"; dying dead poor. (Source)
Henry Percy is Anne's first love, if she's even capable of that emotion. He flirts with her by writing poetry about how much she hates him. George says, "To start a courtship with disdain is the very worst start you could make. A kind start would be more promising" (4.70). But Anne hating Henry works wonders.
Whether or not Anne loves Henry is up for debate. She is devastated when her marriage to him is dissolved, but it's hard to tell if that's because her heart is broken, or if it's because she didn't get her way.