Which 15th century Florentine painter was a follower of scientific realists and naturalists in artwork and contributed to the fledgling art of landscape painting?

Which 17th century portrait painter was prolific and successful but, as a painter at Charles I’s court, had the bad luck to be overshadowed by Anthony van Dyck?

Answers here~ https://schristywolfe.com/2015/10/14/october-14/