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Re: Double cousins
User logged in as bjarbirk
Hiwever, isn't it generally assumed that Francisco de Asis was not the biological father of his wife's children? So in practice, Alfonso XII and his siblings came from a more varied gene pool than what was officially the case...
Isabel II of Spain and her husband Francisco were double cousins.
I believe there might be several other examples in the Iberian royal dynasties as well as in the various branches of the Bourbons, Habsburgs and maybe the Wittelsbachs.
Can anybody provide a list of marriages involving such persons? I believe that Holy Roman Emperor Francis II was married to one, and suspicions were raised that this was the reason for the birth defects of some of his children ...