Original sentence: Matthias (Hungary: Hunyadi Mátyás) was born at Kolozsvár, Kingdom of Hungary (present-day Cluj-Napoca, Romania) in the house currently known as Matthias Corvinus House, the second son of John Hunyadi, a successful military leader of Romanian or Cuman descent  who had risen through the ranks of the nobility to become regent of Hungary, and Erzsébet Szilágyi, from a Hungarian noble family
Edited sentence: Matthias (Hungary: Hunyadi Mátyás) was born at Kolozsvár, Kingdom of Hungary (present-day Cluj-Napoca, Romania) in the house currently known as Matthias Corvinus House, the second son of John Hunyadi, a successful military leader of Hungarian and Cuman descent  who had risen through the ranks of the nobility to become regent of Hungary, and Erzsébet Szilágyi, from a Hungarian noble family