Today, I realized I’d made an oversight about Walder Frey, the treacherous lecherous slayer of Robb Stark. I kind of had an “Oh no!” moment. Rather than returning to my series of posts about the “Second Sons,” I’m going to correct this right away. George RR Martin may have drawn inspiration for Lord Frey from Richard Neville, Earl of Warwick (“Warwick the Kingmaker”). As I’ve mentioned previously, George RR Martin likes to mix and match his “borrowings” from history….