The Treaty of Weissenburg (german: Vertrag von Weißenburg or ''Weißenburger Vertrag'') declared Archduke

Ferdinand Ferdinand is a Germanic name composed of the elements "protection", "peace" (PIE "to love, to make peace") or alternatively "journey, travel", Proto-Germanic , abstract noun from root "to fare, travel" (PIE , "to lead, pass over"), and "co ...

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

the ruler of

Royal Hungary Royal may refer to: People * Royal (name), a list of people with either the surname or given name * A member of a royal family Places United States * Royal, Arkansas, an unincorporated community * Royal, Illinois, a village * Royal, Iowa, a cit ...

and

Transylvania Transylvania ( ro, Ardeal or ; hu, Erdély; german: Siebenbürgen) is a historical and cultural region in Central Europe, encompassing central Romania. To the east and south its natural border is the Carpathian Mountains, and to the west the Ap ...

. It was signed in Weissenburg (Gyulafehérvár) on 19 July 1551. The territory had previously been ruled by

John Zápolya John Zápolya or Szapolyai ( hu, Szapolyai/ Zápolya János, hr, Ivan Zapolja, ro, Ioan Zápolya, sk, Ján Zápoľský; 1490/91 – 22 July 1540), was King of Hungary (as John I) from 1526 to 1540. His rule was disputed by Archduke Ferd ...

's widow,

Isabella Jagiełło Isabella Jagiellon ( hu, Izabella királyné, links=no; pl, Izabela Jagiellonka, links=no; 18 January 1519 – 15 September 1559) was the Queen consort of Hungary. She was the oldest child of Polish King Sigismund I the Old, the Grand Duke of L ...

See also

Further reading