Howden was a small village, one of the first attacked by the Dorocha. Arthur went there on a patrol with Merlin and his knights to investigate. Merlin was attacked by a Dorocha, was saved by Lancelot and found out that his magic was useless. Finally, as Merlin said the Dorocha was something they cannot chase or kill, Arthur decided to leave the place and return to Camelot (The Darkest Hour).It also appeared when the lamia was attacking places, this village being one of them ( lamia ).