SULLY COULDNT SHOOT
Loyal2Family+Albion!
The Shardlake series by CJ Sansom might well tick all his boxes. It's great stuff.
I love Shardlake but might be heavier for kids... the best for the period your son is interested is the Hawkwood series by James McGee... ex- sharpshooter in Wellington's army who becomes a Bow Street Runner