Holyrood Abbey of Holyrood during the four centuries of its existence as a religious house were Kings David I and II; Robert, Bishop of St. Andrews; and Fergus, Lord of Galloway. The Parliament of Scotland met at the abbey in 1256, 1285, 1327, 1366, 1384, 1389 and 1410. In 1326 Robert the Bruce held parliament here and there is evidence that Holyrood was being used as a royal residence by 1329. The Treaty of Edinburgh–Northampton (1328), which brought an end to the First War of Scottish Independence, was signed by Robert I in the "King's Chamber" at Holyrood in March 1328. The
Petershausen Abbey at its own expenses. A panorama of the fortified abbey can be seen in Matthäus Merian's engraving showing Constance and Petershausen during the siege of 1633. A slow recovery of the abbey began after the end of this destructive war. Petershausen was finally secularised to Baden in 1802; the library was bought by the University Library Heidelberg. Margrave Charles Frederick of Baden had parts of the abbey rebuilt as a private residence for his sons. The St Gregory Church was demolished in 1832. The remaining premises were later used as a psychiatric hospital and as barracks. They now accommodate a