Man (5.07)

The young man is a peasant from Camelot, grateful for Merlin's assistance when it comes to saving an old woman. He appears in "Nimue".

Before the Curse
Merlin shines a light from his hand over an old woman who needs help; when the process is complete, he assures her that she's healed, and the young man with her shows his gratitude to the great Sorcerer, who says that they're both very welcome. They walk away and we see that they're in a small village. ("Nimue")