The Nuttall Encyclopedia
Originally gatherings of the people of a district in ancient times in Scotland, at which every man was bound to appear duly armed according to his rank, and make exhibition of his skill in the use of his weapons, against a time of war.
Wood, James, ed. Entry for 'Wapenshaw'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/w/wapenshaw.html. Frederick Warne & Co Ltd. London. 1900.