As far as I'm aware - we Brits never had a King Phillip, only France and Spain. We've had a lot of George's though... mostly in the 1700s. Every French King seems to be called Louis.

Prime Minister Tadpole is bang on. I'm having all the history books changed to reflect this new variation of Walpole. You'd also likely remember Pitt, but only because he was the PM around the time of the revolution.