Who married Julius, Duke of Brunswick-Lüneburg?

Julius of Brunswick-Lüneburg (also known as Julius of Braunschweig; 29 June 1528 – 3 May 1589), a member of the House of Welf, was Duke of Brunswick-Lüneburg and ruling Prince of Brunswick-Wolfenbüttel from 1568 until his death. From 1584, he also ruled over the Principality of Calenberg. By embracing the Protestant Reformation, establishing the University of Helmstedt, and introducing a series of administrative reforms, Julius was one of the most important Brunswick dukes in the early modern era.

Hedwig of Brandenburg (23 February 1540 – 21 October 1602), a member of the Hohenzollern dynasty, was Duchess of Brunswick-Lüneburg and Princess of Brunswick-Wolfenbüttel from 1568 to 1589, by her marriage with the Welf duke Julius.