Sorry, but Dk wasn't initials, it stood for Don't Know. One of those frustrating things we run into. On my gr gr grandmother's DC showed her mother was unknown. Her son was the informant and every one knew who her mother was, I don't understand why he didn't. Wish someone else in the family had given the info, it was the one chance I had to get actaul proof of the name of her mother, and not just family information.