On the island of Montreal was the most important of the seigneuries in the district bearing its name. It was held by the Seminary of St Sulpice, and its six parishes contained in 1712 a population of over two thousand. The soil of the island was fertile and the situation was excellent for trading purposes, for it commanded the routes usually taken by the fur flotillas both from the Great Lakes and from the regions of Georgian Bay. The lands were steadily rising in value, and this seigneury soon became one of the most prosperous areas of the colony. The seminary also owned the seigneury of St Sulpice on the north shore of the river, some little distance below the island. Stretching farther along this northern shore were various large seigneuries given chiefly to officers or former officers of the civil government, and now held by their heirs. La Valterie, Lanoraie, and Berthier-en-Haut, were the most conspicuous among these riparian fiefs. Across the stream lay Chateauguay and Longueuil, the patrimony of the Le Moynes; likewise the seigneuries of Varennes, Vercheres, Contrecoeur, St Ours, and Sorel. All of these were among the so-termed military seigneuries, having been originally given to retired officers of the Carignan regiment. A dozen other seigneurial properties, bearing names of less conspicuous interest, scattered themselves along both sides of the great waterway. Along the Richelieu from its junction with the St Lawrence to the outer limits of safe settlement in the direction of Lake Champlain, a number of seigneurial grants had been effected. The historic fief of Sorel commanded the confluence of the rivers; behind it lay Chambly and the other properties of the adventurous Hertels. These were settled chiefly by the disbanded Carignan soldiers, and it was their task to guard the southern gateway.