Ferdinand IV August Carl Joseph Johannes Nepomuk Thaddeus, Count of Limburg-Stirum zu Illereichen, (24 September 1785-5 December 1800) was sovereign lord of the immediate lordship of Gemen.
Gemen went to Reichsfreiherr Aloys von Boineburg-Bömelberg Zu Erolsheim. It was mediatized in 1806 to the princes of Salm-Kyrburg.
References
W. Gf v. Limburg Stirum, "Stamtafel der Graven van Limburg Stirum", 's Gravenhage 1878;
A.M.H.J. Stokvis, "Manuel d'Histoire, de Genealogie et de Chronologie de tous les États du Globe", Tome III, Leiden 1890-93;
A. Giraud, M. Huberty, F. et B. Magdelaine, L'Allemagne Dynastique, tome VII.
^Duke and Prince Jean Engelbert d'Arenberg, "The Lesser Princes of the Holy Roman Empire in the Napoleonic Era" dissertation, Washington, DC, 1950, published as Les Princes du St-Empire à l'époque napoléonienne (Louvain, 1951) 15ff