In 1693, his son, Karl Kaspar received the Habsburg dominion of Hohengeroldseck as a fiefdom from Austria, and was created Reichsfreiherr von der Leyen und zu Hohengeroldseck in 1697.
In 1711, he was further ennobled he was created Reichsgraf (Imperial Count) von der Leyen und zu Hohengeroldseck.
With most of the count's territories lost to Napoleon France, Reichsgraf Philipp Franz still retained the county Geroldseck.
Upon joining the Rheinbund in 1806, he was created Fürst (Prince) von der Leyen.
In 1819 the principality's holdings were mediatized under the sovereign state Grand Duchy of Baden (until 1871) and, later, as part of the German Empire (from 1871 until 1918), although the title is still being nominally held by von der Leyens.