[The following is an adapted excerpt from my book, Understanding Cemetery Symbols. I hope you enjoy it! Also, full disclosure: that’s an Amazon affiliate link. If you buy my book after clicking it, I make a few pennies at no additional cost to you.] He said, “I cannot tell a lie.” So what’s the deal? If you went to school in the USA, you probably remember hearing that our first president, George Washington, was known for his honesty. Why then, did he add 11 days to his official birthdate? The answer has to do with a thing called “double dating.” Double…