It is interesting to me that Carolyn and Joe started out as boyfriend and girlfriend when DS began because....
[spoiler]Later on in the show, it was revealed that Joe and Chris/Amy are cousins, and Quentin is their great-grandfather. Quentin is Carolyn's great-uncle, so Joe and Carolyn are distant cousins!![/spoiler]
It is interesting to me that Carolyn and Joe started out as boyfriend and girlfriend when DS began because....
[spoiler]Later on in the show, it was revealed that Joe and Chris/Amy are cousins, and Quentin is their great-grandfather. Quentin is Carolyn's great-uncle, so Joe and Carolyn are distant cousins!![/spoiler]
It was much more common in England for 2nd cousins to marry and have children. I don't think taht it was every legal in the U.S. I'm not sure but I think that it's legal to marry a cousin twice removed in this country.