The historical Humphrey was a much more troubling person, prone to idiotic warmongering, alienating people and generally being a self-serving prick. But the image that got handed down was of Good Duke Humphrey, and so here we have him.
In other news, I named a papier-mâché spider after Humphrey. He sits on my computer monitor at work and has a tiny top-hat made from a Post-It note. I was going to call him Richard, after the famous bottled spider, but thought that was too obvious, so I cast around for another Duke of Gloucester and settled on Humphrey. It's a very nice name, Humphrey.
Finally... have you signed up for The Weekly Tickle Brain e-mail newsletter yet? It's a super-awesome newsletter that I send out every Monday, and is stuffed with Shakespearean comic goodness, including a digest of weekly comics, a round-up of any extra material I have posted on social media, and an exclusive recommendation section where I rationally inform you about a Shakespearean-related book, film or TV show that I think is worth checking out. Or possibly I just gush about something for a couple paragraphs. In any case, it's SUPER FUN. Well, no one has complained about it yet...