They were under the command of John Fenwick, the same officer who had been at the head of the troop by which Wallace's father had been killed.

Fenwick left twenty of his men to defend the wagons, and with the rest rode forward against the Scots.

A stone wall checked their progress, and the Scotch, taking advantage of the momentary confusion, made a furious charge upon them with their spears, cutting their way into the midst of them and making a great slaughter of men and horses.

The English rode round and round them, but the Scots, defending themselves with spear and sword, stood so staunchly together that the English could not break through.
The battle was long and desperate, but Wallace killed Fenwick with his own hand, and after losing nigh a hundred of their number the English fled in confusion.

The whole convoy fell into the hands of the victors, who became possessed of several wagons, 200 carriage horses, flour, wine, and other stores in great abundance; with these they retired into the forest of Clydesdale.
The fame of this exploit greatly increased the number of Wallace's followers.