Governor Robertson, Semple's lieutenant, had delegated his authority to Clarke, another ex-employee of the North-West Company. This trader now sought upon Lord Selkirk's authority to penetrate, with an effective force, and a quantity of merchandise, into the very heart of the territory occupied by the North-Westers. One of Clarke's first acts on arriving at Peace River was to attack Fort Vermilion, with the design of acquiring a supply of provisions; but here he met with so vigorous a resistance that he was constrained to beat a retreat without having succeeded in his project. On the other hand, two partners, Black and McGillivray, on the pretence that Robertson had incited the savages to massacre some of their number, and that their men would refuse to serve if an example were not made, took him prisoner to Fort Athabasca, and there confined him during an entire winter. There were numerous examples of the abuse of force and the utter abandonment to lawlessness during this and the following year. [Sidenote: Arrest of Nor'-Westers.] Upon most of those Northmen named in the warrants issued at the instance of the Earl of Selkirk, it had been impossible to serve papers owing to their absence in the distant fur country. Williams, Semple's successor as Governor of the colony of Assiniboia, was consumed with a desire to effect the arrest of all those persons himself. It is possible that he also wished to avenge the incarceration of Robertson. Taking with him a number of De Meuron soldiers and two pieces of cannon, Governor Williams departed to lie in ambush for the North-Westers at a portage called Grand Rapids, which spot it was necessary for the enemy to pass in order to enter Lake Winnipeg. Beyond question, the North-Westers had no suspicion of what was in store for them, inasmuch as the party did not arrive in a large body, but in small detachments, and successively, often at an interval of several days. As fast as they arrived, however, Governor Williams and his soldiers were on the watch. It was new work to the veterans, but they entered into it with a zest and spirit. The North-Westers were seized and disarmed, being subjected to considerable violence. Some were permitted to continue their route; others were dispatched to York Factory, on the Bay. Here they were, during many weeks, detained as prisoners and treated with scant courtesy, up to the arrival of a certain British naval officer. This was Lieut. Franklin, who was then about to undertake his celebrated land voyage to the Arctic Sea. Franklin had in his possession several letters of introduction to partners in the North-West Company. Under these circumstances the consideration, not to say compassion, which he evinced for the Hudson's Bay Company's prisoners was much in their favour. McTavish and Shaw, two of the North-West partners, were granted permission to return to England as passengers on the ship which had brought Franklin, but the others were not so fortunate.