Career
He was appointed Speaker of the House of Magnates in 1861 when Emperor Francis Joseph I convened Hungarian Diet of 1861. As leader of the "old conservative" group he participated in development of the Austro-Hungarian Compromise after 1862. György Apponyi came from the noble Apponyi family.
He served as a secretary of the Hungarian Court Chancellery.
An agreement with opposition leader Lajos Kossuth failed because of the outbreak of the revolution of 1848/49. He fought for the independence of Hungary and was an influential leader of the national party.
On 20 October 1860 he was Judex Curiae in Pest, where he chaired the conference for the reorganization of the Hungarian jurisdiction. As an authorized Commissioner, he opened on 6 April 1861 the Parliament in Budapest led the bureau and the House of Magnates.
After the dissolution of the Diet (21 August), he remained in office as Judex Curiae.
Hopes that he would balance between Austria and Hungary to bring about came true, not, whereupon it on 8 April 1863 resigned his office. Apart from his participation in the state parliament in 1865 and several meetings of the House of Magnates since withdrawn from living in Pozsony.