Marriage between 1st cousins is legal in almost half the states in the U.S. (guess which half):
http://en.wikipedia.org/wiki/Image:M...t_Legality.svg
The linkied Wiki article (
http://en.wikipedia.org/wiki/Incest) points out that while there is a general ban between "close" family members across many cultures, the definition of "close" varies. Sometimes it just comes down to "not in the same household," which would probably apply to the family tree in the OP's game... at least if we define "household" as separate wings of the castle. :beam: