Board Thread:False Info and Speculative Discussion/@comment-6529205-20140729170841

I know this is random but I was thinking and why does Deaton and Ms Morrell has different surnames if thye are siblings? Ms Morrell has always had a "Ms" at the front of her name indicating she is not married, however her surname is different to Deaton. I was wondering if anyone knew anything about this because it confuses me. 