Johann Gregor Memhardt or Memhard (1607 in Linz an der Donau

Linz

Linz is the third-largest city of Austria and capital of the state of Upper Austria . It is located in the north centre of Austria, approximately south of the Czech border, on both sides of the river Danube. The population of the city is , and that of the Greater Linz conurbation is about...

 - 1678 in Berlin

Berlin

Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

) was a master builder, architect and politician.

Life

Memhardt emigrated from Linz to the Netherlands in 1622, where he probably learned the art of fortification. He served as a military engineer with George William, Elector of Brandenburg

George William, Elector of Brandenburg

George William of Brandenburg , of the Hohenzollern dynasty, was margrave and elector of Brandenburg and duke of Prussia from 1619 until his death. His reign was marked by ineffective governance during the Thirty Years' War...

 from 1638 onwards and in 1641 was appointed court engineer. Under his leadership the Residenzschloss was repaired and a chapel built for crown princess Louise Henriette. In the Lustgarten

Lustgarten

The Lustgarten is a park on Museum Island in central Berlin, near the site of the former Berliner Stadtschloss of which it was originally a part...

 he built a 'Lusthaus'. From 1651 the Schloss Oranienburg

Schloss Oranienburg

Oranienburg Palace is a schloss located in the town of Oranienburg in Germany. It is the oldest Baroque schloss in the Margraviate of Brandenburg and built in a Dutch style.-External links:* - official site...

and its gardens were built to Memhardt's designs, known from the plan of Berlin published in 1652.