Further to the note placed at the top of the profile by a curator, I am starting a discussion thread here about this matter in the hope that a definitive and reliable source will enable us to make a decision as to whether to let the relationships stand in Geni.
I am going to copy here what I wrote on another (general) discussion thread with curators.
I have searched high and low for a trustworthy source of information for proof of this liaison and offspring and have so far been unable to find anything.
This page from another genealogy site
http://www.cragun.com/genealogy/getperson.php?personID=I1521&am...... (See Family 1, and scroll down to see it all)
Contains quite a long note speculating on the likelihood of such a liaison, and the author concludes that it's unlikely, but leaves the relationship in place anyway.