1911 Encyclopædia Britannica, Volume 4… (1911)
“ Even during the period when relations between England and Scotland were strained, the sovereigns of both countries recognized it to be their duty to protect property and regulate the lawlessness of the borders. The frontier was divided into the East, Middle and West Marches, each under the control of an English and a Scots warden. The posts were generally filled by eminent and capable men who had to keep the peace, enforce punishment for breach of the law, and take care that neither country encroached on the boundary of the other. ”
