Gilberd again

I've been doing a bit more reading, and found another character I can definitely use - a Dr Mark Ridley, Gilberd's younger protege, who fiercely defended the good philosopher's magnetic philosophy after his death. (Partly against one of Gilberd's earlier collaborators, in fact.) He was part of James VI&I's son Henry's satellite court, which was packed full of philosophers, scholars, mathematicians, and even a few practical men. It would be really interesting to read an alt-history on the theme of "what if Prince Henry hadn't died at 18, and we'd never had Charles I?"
( I have a bit of a dilemma... )