Douglas Harper's Etymology Dictionary
ultra-conservative
1828, from ultra- + conservative (adj.).
Usage examples of "ultra-conservative".
In this case, the ultra-conservative Erskylls of Aton, from old Errol, Duke of Yorvoy, down, had become alarmed at the political radicalism of young Obray, and had, on his graduation from the University of Nefertiti, persuaded the Prime Minister to appoint him to a Proconsulate as far from Aton as possible, where he would not embarrass them.