The Plessington Clan was a Breton noble family hailing from Ykalon. They were known to led a knightly order called the Order of the Cup, which also served as the protectors of the family. In 3E 405, Lord Plessington led the order and was very eager to help in all the affairs of High Rock. He was known to send them off to right a wrong and come back with a story or two, with no other, greater purpose, beyond the charity.[1][2][3]:101
The events of the Warp in the West led to the incorporation of the fiefdom of Ykalon into the Kingdom of Daggerfall. It also caused most of the forests in Ykalon to burn down.[4] It is unknown how this affected the members of the Plessington Clan, however.