The Winged Spur by Sam Morton

They rode through the night like ghosts crossing the border. Moving through the wall built a thousand years before by the Romans to keep them out of England, they stole horses and cattle from the wealthy earls to the south. These were the horsemen from Annandale, the River Esk and the debatable land on Scotland's border. For five hundred years they formed their own armies, fought in Scotland's great battles from Robert Bruce to Mary Queen of Scots and into Ireland. These men and women of clan Johnston/e, Douglas and Scott defied tyrannical rule earning a freedom that would influence politics and religion around the world.