IV, the husband of Jacoba of Holland, and on his death without an heir in 1427, by his second son, Philip of St Pol, who also died childless in 1430. From him his cousin Philip the Good inherited the duchies of Brabant and Limburg and the marquisate of Antwerp. Already he had purchased in 1421 the territory of Namur from the last Count John III, who had fallen into heavy debt; and in 1443 he likewise purchased the duchy of Luxemburg from the Duchess Elizabeth of Görlitz, who had married in second wedlock Anthony, Duke of Brabant, and afterwards John of Bavaria, but who had no children by either of her marriages. Thus in 1443 Philip had become by one means or another sovereign under various titles of the largest and most important part of the Netherlands, and he increased his influence by securing in 1456 the election of his illegitimate son David, as Bishop of Utrecht. Thus a great step forward had been taken for the restoration of the middle kingdom, which had been the dream of Philip the Hardy, and which now seemed to be well-nigh on the point of accomplishment. The year 1433, the date of the incorporation of Holland and Zeeland in the Burgundian dominion, is therefore a convenient starting-point for a consideration of the character of the Burgundian rule in the Netherlands, and of the changes which the concentration of sovereign power in the hands of a single ruler brought into the relations of the various provinces with one another and into their internal administration. The Netherlands become now for the first time something more than a geographical expression for a number of petty feudal states, practically independent and almost always at strife. Henceforward there was peace; and throughout the whole of this northern part of his domains it was the constant policy of Philip gradually to abolish provincialism and to establish a centralised government. He was far too wise a statesman to attempt to abolish suddenly or arbitrarily the various rights and privileges, which the Flemings, Brabanters and Hollanders had wrung from their sovereigns, and to which they were deeply attached; but, while respecting these, he endeavoured to restrict them as far as possible to local usage, and to centralise the general administration of the whole of the "pays de par deçà" (as the Burgundian dukes were accustomed to name their Netherland dominions) by the summoning of representatives of the Provincial States to an assembly styled the States-General, and by the creation of a common Court of Appeal.