Margarey de Arderne (née de Elleford; 1250 – 1300) was the 28th great-grandmother of Cometan, classified as one of Cometan’s medieval paternal ancestors in the Taylor family line. Margarey is known to have been born in Aldford, Cheshire and is thought to have also died there. She was the wife of Sir Peter de Arderne and was the daughter of Roger de Elleforde who connects him to the Cometanic ancestry. Margarey was also the mother of Sir John Arderne of Alford.
In Cometanic ancestry, Margarey is categorised as part of the 30th generation retrograde, and because she was born before 1453, she is classified as a medieval ancestor of Cometan, a title that is rarely bestowed.