Karl Ferdinand von Buol was an Austrian Empire diplomatist and statesman, who served as Foreign Minister of Austrian Empire from 1852 to 1859.

Felix Ludwig Johann Friedrich, Prince of Schwarzenberg was a Bohemian nobleman and an Austrian statesman who restored the Austrian Empire as a European great power following the Revolutions of 1848. He served as Minister-President of the Austrian Empire and Foreign Minister of the Austrian Empire from 1848 to 1852.