This article seems to cite all the right sources in implying that there is a false paternity event in the short line between Edward III and Richard III. However, they haven’t examined Edward III’s Y-chromosome or the much longer paternal chain to the (Regency) 5th Duke of Beaufort, as we did here.
Hilariously, even one of this Duke’s “descendants” isn’t, as shown here.
murreyandblue 