I haven't seen any, bud. I've gotten, both, Knight's Errant rings and the "named" Knight's Errant rings (Plunder's Rings) and they're all "Healthy". My suggestion would be to put all your Attribute points toward Stamina and just let the jewelry act as your health input.
Want to enjoy the game more? Try both PvP (crybabies) and PvE (carebears). You'll get a better perspective on everyone's opinion.