Johann Friedrich Karl von Ostein (6 July 1689 – 4 June 1763) was the Prince-Bishop of Worms,

Archbishop of Mainz The Elector of Mainz was one of the seven Prince-electors of the Holy Roman Empire. As both the Archbishop of Mainz and the ruling prince of the Electorate of Mainz, the Elector of Mainz held a powerful position during the Middle Ages. The Archb ...

and

Elector Elector may refer to: * Prince-elector or elector, a member of the electoral college of the Holy Roman Empire, having the function of electing the Holy Roman Emperors * Elector, a member of an electoral college ** Confederate elector, a member of ...

Mainz Mainz () is the capital and largest city of Rhineland-Palatinate, Germany. Mainz is on the left bank of the Rhine, opposite to the place that the Main (river), Main joins the Rhine. Downstream of the confluence, the Rhine flows to the north-we ...

Early life

He was born as the eldest son of Count Johann Franz Sebastian von Ostein (1652-1718) and his wife, Countess Anna Karolina Maria von Schönborn (1671-1746).

Biography

He was a relative of

Lothar Franz von Schönborn Lothar Franz von Schönborn-Buchheim (4 October 1655 – 30 January 1729) was the Archbishop-Elector of Mainz from 1694 to 1729 and the Bishop of Bamberg from 1693 to 1729. As Archbishop of Mainz, he was also Archchancellor of the Holy Roman Empi ...

, a prior Archbishop-Elector of Mainz. On 22 April 1743 he was selected as a compromise candidate for Archbishop. His rule was overshadowed by the

War of the Austrian Succession The War of the Austrian Succession () was a European conflict that took place between 1740 and 1748. Fought primarily in Central Europe, the Austrian Netherlands, Italy, the Atlantic and Mediterranean, related conflicts included King George's W ...

Seven Years' War The Seven Years' War (1756–1763) was a global conflict that involved most of the European Great Powers, and was fought primarily in Europe, the Americas, and Asia-Pacific. Other concurrent conflicts include the French and Indian War (1754� ...

and subsequent peace treaty. Having supported the losing side in the Seven Years' War, the cost of reparations bankrupted Mainz. A new mansion, Osteiner Hof was built along the Diethmarkt, now Schillerplatz, as his principal residence. The town experienced at Osteins time big changes. The electoral palace was largely completed in 1752. In addition, the new buildings of St. Peter's and the Jesuit church were built, as well as the

Bassenheimer Hof The Bassenheimer Hof (Bassenheimer Palace) is an historic building in Mainz, western Germany. At present (2009) the large structure is the seat of the Ministry of the Interior and Sports of the federal state of Rhineland-Palatinate. History The ...

on Diethmarkt. Johann Friedrich Karl died on 4 June 1763 and was buried in

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. {{DEFAULTSORT:Ostein, Johann Friedrich Karl von 1689 births 1763 deaths Archbishop-Electors of Mainz Roman Catholic bishops of Worms