At a later point in time, he was captured in his sleep by King Niðhad in Nerike who ordered him hamstrung and imprisoned on the island of Sævarstöð. There he was forced to forge items for the king.
In revenge, Weyland killed the king's sons when they visited him in secret, fashioned goblets from their skulls, jewels from their eyes, and a brooch from their teeth. He sent the goblets to the king, the jewels to the queen and the brooch to the king's daughter. When Bodvild took her ring to him to be mended, he took the ring and raped her, fathering a son and escaping on wings he made.
Welund tasted misery among snakes. The stout-hearted hero endured troubles had sorrow and longing as his companions cruelty cold as winter - he often found woe Once Nithad laid restraints on him
Below the forge is the headless body of Niðhad's son, who Wayland has killed, making a goblet from his skull; his head is probably the object held in the tongs in Wayland's hand. With his other hand Wayland offers the goblet, containing drugged beer, to Bodvild, Niðhad's daughter, who he then rapes when she is unconscious
Points bolded by me that could link to Prometheus.