 The Hunyadi family was one of the most powerful noble families in the Kingdom of Hungary during the 15th century . A member of the family , Matthias Corvinus , was King of Hungary from 1458 until 1490 , King of Bohemia ( ruling in Moravia , Lower Lusatia , Upper Lusatia , and Silesia ) from 1469 until 1490 , and Duke of Austria from 1487 until 1490 . His illegitimate son , John Corvinus , ruled the Duchy of Troppau from 1485 until 1501 , and five further Silesian duchies , including Bytom , Głubczyce , Loslau , Racibórz , and Tost , from 1485 until 1490 . The Hunyadi coat @-@ of @-@ arms depicted a raven with a golden ring in its beak . 
