Bram is a merchant in The Witcher 3: Wild Hunt.
The Griffin has killed the horse and is eating it, and Bram would have most likely been next on the menu, but Geralt and Vesemir intervene and manage to chase the Griffin away, not before it injures Vesemir in the shoulder.
Bram thanks the Witchers and asks if they want a reward (You can answer "You don't owe us a thing" or "We could use a few crowns")
When Bram learns that the Witchers are looking for Yennefer, he suggests they go to the inn at the village and ask the travelers there. The innkeeper, Elsa (who is Bram's cousin) might be able to help too if you tell her that Bram sent you.