Herbalist and Alchemist, also known as a bit of a sage
Smeth is the most widely known alchemist and herbalist in Bluwell. He’s known to both buy and sell rare ingredients and is also known for his knowledge on things both arcane and natural.
He frequently takes trips, presumably to refresh his merchandise. During these times one of his many apprentices takes charge of the shop. They are all familiar enough with the buying and selling end of things, but don’t have anywhere near the knowledge of their master.