I guess even royalty couldn't escape getting infected with parasites due to lack of sanitation in the old days. About 820 million are infected with roundworm in the world according to the source in the article, that's slightly more than 10%.

http://news.yahoo.com/hunchback-king-richard-iii-infected-worms-011520753.html

So in 10th grade history class, a classmate who had not done any preparation for his oral report on Martin Luther listened to the one before his, then got up and told us, "...and then he died of worms."

http://en.m.wikipedia.org/wiki/Diet_of_Worms

Aww he is so cute.. I want a son like that..