Who was Borden in Merlin?

Borden is a character in the BBC television series "Merlin." He is portrayed as a sorcerer and a member of the Order of the Old Religion, which opposes King Arthur's rule. Borden plays a significant role in the plot as he seeks to revive the old ways of magic and challenges the established order in Camelot. His character highlights the ongoing conflict between magic and the laws of the kingdom.