Trewwaz

Could you specify what Trewwaz refers to? Is it a place, an organization, a historical term, a family name, a fictional work, or something else? If you don’t have a specific reference, I can draft a concise, neutral wiki-style stub that outlines possible meanings, etymology, and usage, but I’ll need to know the intended domain (geographic, cultural, fictional, etc.) and any preferred details or sources.