 For a short time (16 June 1815 to 3 November 1815), Reichweiler, among other places, was assigned to the Kingdom of Prussia, but on the condition that an area containing 69,000 souls be ceded from the former Department of Saar to leaders of lesser states.On 11 September 1816, Reichweiler thus passed to the Principality of Lichtenberg (which was given this name on 6 March 1819), a newly created exclave of the Duchy of Saxe-Coburg-Saalfeld, which as of 1826 became the Duchy of Saxe-Coburg and Gotha.Reichweiler belonged to the "Amt" of Burglichtenberg, which was united with the "Amt" of Berschweiler on 1 October 1822, in the Canton of Baumholder.