Cromwell Relics

In Noble's *Memorials of the Protectorate House of Cromwell* it is stated, in the Proofs and Illustrations, Letter N, that in 1784, there were dispersed in St. Ives a great number of swords, bearing the initials of the Protector upon them; and, further, that a large barn, which Oliver built there, was still standing, and went by the name of Cromwell's Barn; and that the farmer then renting the farm occupied by the Protector circa 1630-36, marked his sheep with the identical marking-irons which Oliver used, and which had O.C. upon them. Can any of your correspondents inform me if any of these r…