Sir Knight Peter de Arderne (1241 – September 12, 1292) was the 28th great-grandfather of Cometan, classified as one of Cometan’s medieval paternal ancestors in the Taylor family line.

Sir Peter is known to have been born in Aldford, Cheshire and is thought to have died in Alvanley, Runcorn, Cheshire. He was the husband of Margery de Elleford and was the father of Sir John Arderne who connects him to the Cometanic ancestry. Sir Peter was also the son of Sir Walkelin de Arderne, who was the Chief Justice of Cheshire and Agnes de Orreby. 

In Cometanic ancestry, Sir Peter is categorised as part of the 30th generation retrograde, and because he was born before 1453, he is classified as a medieval ancestor of Cometan, a title that is rarely bestowed.