Klemens von Metternich
Klemens Wenzel Nepomuk Lothar, Prince von Metternich-Winneburg zu Beilstein, KOGF (; 15 May 1773 – 11 June 1859) was an Austrian diplomat who was at the center of European affairs for four decades as the Austrian Empire's foreign minister from 1809 and Chancellor from 1821 until the liberal Revolutions of 1848 forced his resignation.
Leopold, Prince of Salerno
Leopold married his niece Archduchess Clementina of Austria, third surviving daughter of Francis II, Holy Roman Emperor (later Francis I of Austria) and his sister Maria Teresa of Naples and Sicily on 28 July 1816 at Schönbrunn Palace in Vienna. Leopold and Clementina had four children but only their daughter Princess Maria Carolina survived infancy. Prince Louis and two infants died within their first year.Leopold also had an extramarital affair with the Viennese dancer Fanny Elssler, which led to the birth of an illegitimate son, Franz, born in 1827 and died by suicide in 1873.