Wanna marry your first cousin, but don’t know where it’s legal? Well, here’s the info you’ve been looking for. While it’s illegal here in Philly, all you have to do is drive across the bridge to make it happen. And in their biggest shocker since beating Wake Forest, West Virginia does not allow cousing marriages. Here’s some more facts about marrying your cousin. For example, did you know that Charles Darwin and Albert Einstein both married their first cousins?