@TheBellsAreRinging I’ve been doing analysis of Brandon’s map (including place names) here, Mountaineer's Map of New York - #5 by Leigha if you’re interested. Brin is a root word meaning hill. Brandon means broom-covered hill. Hope that helps.
Also, don’t know if it helps, but since the Fae (faery) were mentioned, In Ireland and Scotland faery-folk were believed to live in hills or Shee, and hills were considered entrances or portals to their realm.
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