- Aug 2013
- United States
In southeast Asia such as Burma/Myanmar it was traditional for half-siblings to marry.I think that's really the only culture where it was common though. It certainly wasn't in Europe (I only know of one case where siblings married, and it wasn't a legal marriage, nor was it socially acceptable: https://en.wikipedia.org/wiki/John_V,_Count_of_Armagnac ). I don't know much about Asia but I don't think it was common there either.