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
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...