User blog comment:Project Predacon/Volume 2: Post Credits Scene Analysis/@comment-13499046-20141031001109/@comment-3146930-20141031002437

What is with everyone's fixation on time-travel characters lately? As far as the last name thing, it isn't really that hard to believe. I mean woman don't always change their last name when married. My mother changed her name when she was married the first time, but not the second time. Also two of the women my dad married didn't change their name. If Qrow and Raven are siblings and Raven didn't change her last name (either because they were never married or she wanted to keep it), then of course she would share her name with her brother.