...there was that 5 year old in the 30's who's child was delivered by cesarean from Peru...
...The father is unknown if memory serves...
True,but that's just single parent.
Double parent is the real record to beat,if we ever get confirmation on who were the youngest parents.
After that,though,comes beating youngest grandparents,the record for single grandparent was the one lass in an African tribe where the custom was for the chief to get his Dues Vult on with every female when they turned five,with her ass giving birth to a girl,who then gave birth to her own child after she turned five herself,single grandparent at 10.
Pure insanity incarnate for two five year olds(or less,even)to get it on like Donkey Kong,have a child,and then said child getting on like Donkey Kong themselves with a same age peer,and produce more offspring.
And I wouldn't doubt some artist out there having already made a story like that.