As noted previously here in Geni by Vesa-Pekka Alasiuru, there wasn't ever a "Nils av Tofta". There seem to be two profiles of him in Geni. Profile owners, please see the text at
http://sv.wikipedia.org/wiki/Nils_av_Tofta
If this source has limited credibility, there should be contrary evidence available.
On the other hand, what a pity, as Nils would have been one of my 18th great-grandfathers...