My argument would be that Cleopatra wore the finest cotton grown in the Egyptian’s Nile valley. The first spinning wheel was thought to have originated in India about 500 years before Jesus was born. Columbus bumped into a big lump of land and called it America in 1492, he found cotton already growing. Cotton seeds are believed to have been planted in Florida around 1556 and in Virginia in 1607. With all of that why wouldn't dorset buttons, purchased by a wealthy owner of an inn, be made with cotton thread?