Guilds were more or less non-existent in the countryside in historical Europe. A guild isn't needed until you have at least a few practitioners of a craft, and that just didn't happen. Even when rural weaving became a whole industry in the 1400s (roughly), there were no guilds of rural weavers. In fact, in many places, the rural practitioner of a craft was forbidden to sell in town. Broadly speaking, towns wished to exert control over their rural hinterland.
That said, there's no reason in a fantasy novel *not* to have rural guilds. Just don't bother trying to make them conform to any sort of historical model. Make up what serves the story and call that a guild.
That said, there's no reason in a fantasy novel *not* to have rural guilds. Just don't bother trying to make them conform to any sort of historical model. Make up what serves the story and call that a guild.