This book (without an image on Amazon) is a straightforward brief comparative study of the early Crusading orders, Templars, Hospitilars, Teutonic Knights, and a number of others.
On pages 47-8, I was quite taken by references to peoples and regions of northern Europe I'd never heard of:
Ungannia, Wierland, Warbolians, Warmia, Nattangia, and Bartia.
I found online references to all but the Warbolians.
I offer this list to you for your own amusement.
Image: Fearsome Templars.