Tom

Thomas, known simply as Tom, was a blacksmith in Camelot and is the father of Guinevere. He was one victims of the disease spread by Nimueh and her Afanc. Merlin used his magic to cure him but unfortunately, Gwen is accused of sorcery. Merlin, Arthur and Morgana save her by killing the Afanc. (The Mark of Nimueh)

Later in the series, Tom is working for Tauren, who uses magic to create gold - unknown to Tom at the time. Discovering the gold, Arthur arrests Tom and Uther condemns Tom to death, believing Tom is forging weapons for Tauren. Morgana, realising Tom's trial is merely a formality, gave Tom the key to escape. He was captured by the guards and killed on the spot, leaving Gwen an orphan. (To Kill the King)