Quick answer: where is Graham in Gothic 1 Remake?
The Gothic 1 Remake Graham location is inside the Old Camp, along the camp's working and trading area rather than out in the wilderness. Enter through the main gate, follow the central path toward the camp's stalls and brazier, and look for the mapmaker's small working area near the market activity. If you are using a full interactive map, search the Old Camp first; you do not need to cross the Mining Colony to find him.
Graham matters because he is not only a named NPC. He is the early map seller who can give you a physical reference for the Old Camp and the wider Colony. The best purchase depends on what you are doing: buy the local map when you want to orient yourself inside the camp, and consider the wider Colony map when you are ready to connect camp roads, mines, caves and quest routes. The exact ore cost can vary with your game state and should be checked in the live trade window rather than copied from an old guide.
This page is narrower than the existing Gothic 1 Remake map and locations guide. That guide explains how to read the whole Mining Colony; this one answers the stuck-player question: where is Graham, what does he sell, and which map should you buy first?