The Treaty of Weissenburg (German: Vertrag von Weißenburg or Weißenburger Vertrag) declared Archduke Ferdinand of Austria the ruler of Royal Hungary and Transylvania. It was signed in Weissenburg (Alba Iulia) on July 19, 1551. The territory had previously been ruled by John Zápolya's widow, Isabella Jagiełło. Ferdinand I Habsburg Ferdinand I (10 March 1503–25 July 1564), Holy Roman Emperor (1556–1564), was born in Madrid, the son of Juana the Mad, Queen of Castile (1479–1555), and Philip I the Handsome, King of Castile (1478–1506), who was heir to Holy Roman Emperor Maximilian I... Consequences of the Battle of Mohács, and the conquest of Buda in 1541 by the Ottomans: the Kingdom is partitioned. ... Map of Romania with Transylvania in yellow Transylvania (Romanian: or ; Hungarian: ; German: ; Serbian: / Transilvanija or / Erdelj) is a historical region in central and western Romania. ... Alba Iulia (Hungarian: Gyulafeh r, German: Karlsburg) is a city in Alba county, Transylvania, Romania with a population of 66,369, located on the Mureş river. ... July 19 is the 200th day (201st in leap years) of the year in the Gregorian Calendar, with 165 days remaining. ... Year 1551 was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. ... John I Zápolya (Hungarian János Zápolya or Szapolyai) (1487–July 22, 1540), was a anti-king (with Ferdinand I) of Hungary between 1526 and 1540 [ Brit-JZ]. After the battle of Mohács in 1526 and death of Louis II of Hungary, the Ottoman Empire conquered much... Isabella Kazimira JagieÅ‚Å‚o (18 January 1519, Kraków – 15 September 1559, Alba Iulia) was a queen of Hungary of royal Polish origin. ...

See also

• List of treaties

This is a chronological list of international treaties, historic agreements, peaces, edicts, pacts, etc. ...

Further reading

• Turba, Gustav; C. Fromme (1903). Geschichte des thronfolgerechtes in allen habsburgischen Ländern bis zur pragmatischen Sanktion: Kaiser Karls VI: 1156 bis 1732. Stanford University.  (German)

• Volkmer, Gerald (2002). Das Fürstentum Siebenbürgen 1541-1691. Außenpolitik und völkerrechtliche Stellung. Heidelberg: Arbeitskreis für Siebenbürgische Landeskunde.  (German)