One of the many branches of Henry’s continental policy was the cultivation of an alliance with those small but important states which lay on the border-land between Italy, Germany, and that old Aquitanic Gaul over which he claimed dominion in his wife’s name. The most important of these was the county of Maurienne, a name which in strictness represents only a small mountainous region encircled to east and south by the Graian and Cottian Alps, and to west and north by another chain of mountains bordering the outermost edges of two river-valleys, those of the Isère and the Arc, which again are severed from each other by a line of lesser heights running through the heart of the district. In the southern valley, that of the Arc, stood the capital of the county, S. Jean-de-Maurienne, the seat of a bishopric from the dedication of whose cathedral church the town itself took its name. In the northern valley, at the foot of the Little S. Bernard, some few miles above the source of the Isère, the counts of Maurienne were advocates of the abbey of S. Maurice, which long treasured the sacred symbol of the old Burgundian royalty, the spear of its patron saint. The power of the counts of Maurienne, however, was not bounded by the narrow circle of hills which stood like an impregnable rampart round about their native land. On the shore of the lake of Bourget they held Chambéry, guarding the pass of Les Echelles, through which southern Gaul communicated with the German lands around the lake of Geneva; the county of Geneva itself was almost surrounded by their territories, for on its western side their sway extended from Chambéry across the valley of the Rhône northward as far as Belley, while eastward they held the whole southern shore of the lake. To north-east of Maurienne, again, the great highway which led from Geneva and from the German lands beyond it into Italy, through the vale of Aosta by the passes of the Pennine Alps or up the valley of the Isère by S. Maurice under the foot of the Little S. Bernard, was in their hands; for Aosta itself and the whole land as far as Castiglione on the Dora Baltea belonged to them. Across the Graian Alps, their possession of the extreme outposts of the Italian border, Susa and Turin, gave them the title of “Marquises of Italy,”[630] and the command of the great highway between Italy and southern Gaul by the valley of the Durance and through the gap which parts the Cottian from the Maritime Alps beneath the foot of the Mont Genèvre; while yet further south, on either side of the Maritime Alps where they curve eastward towards the Gulf of Genoa, Chiusa, Rochetta and Aspromonte all formed part of their territories.[631] In one word, they held the keys of every pass between Italy and north-western Europe, from the Great S. Bernard to the Col di Tenda. Nominally subject to the Emperor in his character of king of Burgundy, they really possessed the control over his most direct lines