I want to know the answer to the following question:
Who was appointed regent-governor of the Kingdom of Hungary in 1446?
All the background I'm provided with is that "Hunyadi was considered one of the most relevant military figures of the 15th century: Pope Pius II awarded him the title of Athleta Christi or Champion of Christ for being the only hope of resisting the Ottomans from advancing to Central and Western Europe.". Is that enough to answer the question?