Nagymartoni family

House of Nagymartoni
Coat of arms of Paul Nagymartoni
CountryKingdom of Aragon
Kingdom of Hungary
Duchy of Austria
Founded1202
FounderTota
Final rulerWilliam
Estate(s)Nagymarton, Bajót, Fraknó, Kabold, Lánzsér, Trausdorf
Dissolution1446
Cadet branchesafter 1346: "German" and "Hungarian" branches

The Nagymartoni or Martinsdorfi (also Bajtói, and later Fraknói; German: von Mattersdorf, later von Forchtenstein) was a noble family in the Kingdom of Hungary of Aragonese origin, which existed from the early 13th century to the mid-15th century. In the last period of their existence, they were subjects of the Duke of Austria too.