1830, Thomas Robson (engraver.), The British herald, or Cabinet of armorial bearings of the nobility & gentry of Great Britain & Ireland, page 16:
Fesse chapourne. See FESSE ARCHY. Fesse supported with two stays cheveronways, by some called a tressel in fesse, supported with two staves issuing from the base, in the form of a cheveron. It forms part of the arms of PORTMAN.
1963, Julian Franklyn, Shield and Crest: An Account of the Art and Science of Heraldry:
Point champaine, chapourne, or champion, is formed by a downward curvature imparted to the line of division that would make a plain point, thus forming a shallow bowl. This was reserved for the man who killed a prisoner of war[…]
