Marchers
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
In old English law
Nobles who lived on the Marches, and had their own laws, and power over life and death, as if they were petty princes.
Camden; Jacob. Abolished by St. 27 Hen. VIII. c. 26, 1 Edw. VI. c. 10, and 1 & 2 Philip & M. c. 15.'
They were also called "Lords Marchers."