Martin Foss is a dwarf paladin that owns a martial training yard in Neverwinter. He is also a member of the Order of the Gauntlet and serves as the party’s contact with that faction’s network of churches, weapons, and discounted items for purchase.
Martin is an avid fan of Ren o’ the Blade, and enjoys reading Ren’s memoirs and regaling others with the ranger’s heroic deeds. In S09, we learn that Martin’s rare copy of Ren’s memoirs, on loan from Mantor Library, was stolen.
In S11, it is revealed that the Cult of the Dragon was responsible for stealing Martin’s book, along with a few other tomes that discussed dragons, Ren’s battle with Tyranthraxus, the Weave, and Pools of Radiance.