WayneLigon
Adventurer
Kurtz' Deryni books are good for atmosphere; there is not a great deal of magic (one could argue that there is no magic at all, just psionics) and so the descriptions of the court, the church, etc, can be used pretty much anywhere.
Again, check out the mystery section. Plenty of great books set in the period.
Again, check out the mystery section. Plenty of great books set in the period.