You know who you are. You’ve seen every episode of the first three series of the mega-hit British period drama, Downton Abbey. You own a ‘Free Bates’ t-shirt. You’re feeling pretty good about the fact that you know that the labrador dogs of Downton Abbey go by the name of Pharaoh and Isis. Well, there just might be a few things you don’t know about the series even though you’ve seen each episode more times than the law allows.

Definitely no spoilers here, we’ll leave that to other sites. Just some cool bits of behind-the-scenes/how the sausage is made cocktail party trivia as the U.S. tirelessly counts down the days until series 4 of Downton Abbey premieres on PBS’ Masterpiece.

The 5 Things You Don’t Know About Downton Abbey

• How many bedrooms are used in filming?
• How did Mary’s baby get its name?
• Wigs have names, too!
• Who went from Little Orphan Annie to scullery maid?
• Who inspired the character of Bates?