Under King Louis XIV the Bishopric of Cambrai finally became French after the Siege of Cambrai of 1677, confirmed in the Treaties of Nijmegen of 1678 and 1679. From 1790 Cambrai was part of the new Nord department. By the Napoleonic Concordat of 1801, Cambrai was again reduced to a simple bishopric, suffragan to Paris, and included remnants of the former dioceses of Tournai, Ypres, and Saint Omer. In 1817 both the pope and the king were eager for the erection of a see at Lille, but Bishop Louis de Belmas (1757–1841), a former constitutional bishop, vigorously opposed it. Immediately upon his death, in 1841, Cambrai once more became an archbishopric, with the diocese of Arras as suffragan.