Mary Queen of Scots...New Info?

I'm not really sure where this post should go, as although it is in relation to a new kindle book, it is actually about Scottish History.

Anyone who has read the history of Mary Queen of Scots, will know of the "stated fact", that she was probably raped by James Hepburn, and that the resulting twins were stillborn. Now a modern day descendant is claiming that not only did the twins survive, but that both parents worked together, and went to a lot of trouble to hide them.

These findings have been laid out in a kindle book, Rob Roe Seur, at £7.18, but the author has also put up a website with many of his findings here.

Has anyone come across these claims before?