 The 18th century ushered in a time of steady population growth, and there was emigration, mainly to North America.Gumbsweiler lay within Palatinate-Zweibrücken, and also within an "Unteramt", which was administered for a while from Altenglan, next from the vanished village of Brücken (not to be confused with Brücken, which still exists), and then from Ulmet.In 1546, Duke Wolfgang approved the expansion of Heinrich Kolb’s mill by two grist runs on the proviso that the estate mill at Ulmet not have any business taken away from it.