In 1713, he had transactions with two emissaries of the house of Stuart, and was called to account for that negotiation before the commander-in-chief in Edinburgh. He escaped punishment; and prepared, in 1715, to lead his clans to the field, headed by Macgregor of Glengyle, his nephew.[113] Upon Michaelmas day, having made themselves masters of the boats in Loch Lomond, seventy of the Macgregors possessed themselves of Inch-murrain, a large island on the lake. About midnight they went ashore at Bonhill, about three miles above Dumbarton. Meantime the alarm was spread over the country; bells were rung, and cannon fired from Dumbarton Castle. The Macgregors, therefore, thought fit to scamper away to their boats, and to return to the island. Here they indulged themselves in their usual marauding practices, "carrying off deer, slaughtering cows, and other depredations." Soon afterwards they all hurried away to the Earl of Mar's encampment at Perth; here they did not long remain, but returned to Loch Lomond on the tenth of October.[114] They now mustered their forces. Such was the terror of their name, that both parties appear to have been afraid of the Macgregors, and to think "it would be their wisdom to part peaceably with them, because, if they should make any resistance, and shed the blood of so much as one Macgregiour, they would set no bounds to their fury, but burn and slay without mercy." This was the opinion held by some; by others resistance was thought the more discreet as well as the more honourable part. A body of volunteers was brought from Paisley, and it was resolved, if possible, to retake the boats captured by the Macgregors, who could now make a descent wherever they pleased. A singular spectacle was beheld on the bosom of Loch Lomond: four pinnaces and seven boats, which had been drawn by the strength of horses up the river Levin, which, next to the Spey, is the most rapid stream in Scotland, were beheld, their sails spread, cleaving the dark waters which reflected in their mirror a sight of armed men, who were marching along the side of the loch, in order to scour the coast. Never had anything been seen of the kind on Loch Lomond before. "The men on the shore," writes an eyewitness, "marched with the greatest ardour and alacrity. The pinnaces on the water discharging their patararoes, and the men their small arms, made so very dreadful a noise thro' the multiply'd rebounding echoes of the vast mountains on both sides the loch, that perhaps there never was a more lively resemblance of thunder." This little fleet was joined in the evening by the enemy of the Macgregors, Sir Humphrey Colquhoun of Luss, followed by "fourty or fifty stately fellows, in their short hose and belted plaids, armed each of 'em with a well-fixed gun on his shoulder." At Luss a report prevailed that the Macgregors were reinforced by Macdonald of Glengarry, and had amounted to fifteen hundred strong: but this proved