In the south (of the Netherlands) Christianity was spread by the labours of devoted missionaries, foremost amongst whom were St Amandus, St Bavon and St Eligius, and bishoprics were set up at Cambrai, Tournai, Arras, Therouanne and Liege.
Flourishing communities were likewise to be found in Hainault, Namur, Cambrai and the other southern districts of the Netherlands, but nowhere else the vigorous independence of Ghent, Bruges and Ypres, nor the splendour of their civic life.
Some time afterwards Pierre d'Ailly became bishop of Cambrai (March 1 9, 1 397) by the favour of the pope, who had yielded no whit, and, by virtue of this position, became also a prince of the empire.
However, the language of the bishop of Cambrai seems on this occasion to have been lacking in decision; however that may be, it led to no felicitous result.
Discouraged by his failure to effect this, he returned to his diocese of Cambrai at the beginning of 1408.