MCkha489,
Thanks so much for that! So it very much looks as though Anne Roundel did indeed die before both those two sons were conceived and born, suggesting a second subsequent marriage for Cornwall Baron The plot thickens as they say...
Keith
Messages crossed in the ether, even more exciting, and explanatory. The plot unthickens, therefore, thanks to your extremely helpful sleuthing on my behalf. Lots more to ponder now...