Further Austria comprised the Sundgau (southern Alsace) and the Breisgau east of the Rhine (including Freiburg im Breisgau after 1386) and included some scattered territories throughout Swabia, the largest being the margravate Burgau in the area of Augsburg and Ulm. Some territories in Vorarlberg that belonged to the Habsburgs were also considered part of Further Austria. The original homelands of the Habsburgs, the Aargau and much of the other original Habsburg possessions south of the Rhine and Lake Constance were lost in the 14th century to the expanding Old Swiss Confederacy after the battles of Morgarten (1315) and Sempach (1386) and were never considered part of Further Austria, except the Fricktal, which remained a Habsburg property until 1805.