Lord Dougal was one of the nine original Sidhe and founder of House Dougal.
Lord Dougal fought at the Battle of the Riven Mountain. During the battle he gave his sword to Lord Gwydion, after the latter had his own blade broken. From that point on Lord Dougal fought with his bare hands, and vanquished many foes.
Lord Dougal fashioned the urn which Lady Eiluned used to carry Boggan through the Gate of Horn.
Lord Dougal attacked Lord Aelil when that one returned to Arcadia, but succeeded only in splintering off a piece of the Gate of Horn, before being struck down, his soul being trapped by the shard and his form made as a statue.