Robert, I never actually thought to ask him for proof -thank you. I just assumed that since I had none at the moment it would be best for me to shut up. I chose a more passive-aggressive stance and wrote my term paper over a few specific royals who were their countries heads of states during the first world war. Naturally, I chose Nicholas and made sure to include quotes from himself and noted historians referring to Nicholas abdicating on behalf of himself AND his son and how Alexei's illness was to be kept a secret so that the people wouldn't know that their future TSAR would never be completely healthy. Hopefully I got my point across and if he writes that the information is somehow wrong, I'll go to the head of the department.
He did make a couple of mistakes last week that I'm prepared to correct him on if he mentions them again. They're relatively small, but it all adds up. Apparently the royal family spends Christmas in Scotland at Balmoral (instead of Sandringham) and that Elizabeth II's title is Queen of England. I was talking to a friend about it, explaining that in fact there is no Queen of England, but instead a Queen of Great Britain, when he popped into the conversation and with a sniff, assured me I was incorrect. Someone with a laptop came in later and upon thirty seconds on royal.uk.gov I was proven right on both counts. So now it's no longer about what he teaches, but what he tries to insert into the conversations of others. He was passing out tests and commented on a book I was reading, something about the fact that the author had spent years in prison. I got home, looked it up, and he didn't.