Board Thread:TV Show Discussion/@comment-27176285-20160627173455/@comment-1600847-20160628195321

220.88.250.225 wrote:

That was a very long time ago and was not practiced once the Seven Gods became major religion. Not in every case. The Faith of the Seven forbids incest... but ingored Targaryen incest for centuries. Even Aerys was married to his sister, presumably in a ceremony officiated by a Septon. Letting Rhaegar have two wives would've probably been tame in comparison.