Frederick's advisors in the Palatinate were worried that if Elizabeth were married to a Catholic prince, this would upset the confessional balance of Europe, and they were thus resolved that she should marry Frederick V. Hans Meinhard von Schönberg, who had served as Frederick V's Hofmeister since his return to Heidelberg, was sent to London to court the princess in spring 1612.
The man chosen was Frederick (Friedrich) V, Count Palatine of the Rhine. Frederick was of undeniably high lineage. His ancestors included the kings of Aragon and Sicily, the landgraves of Hesse, the dukes of Brabant and Saxony, and the counts of Nassau and Leuven. He and Elizabeth also shared a common ancestor in Henry II of England.
Charles Louis, Elector Palatine (German: Karl I. Ludwig; 22 December 1617 – 28 August 1680), was the second son of Frederick V of the Palatinate, the "Winter King" of Bohemia, and of Elizabeth Stuart, Queen of Bohemia and sister of Charles I of England.
Frederick William (German: Friedrich Wilhelm; 16 February 1620 – 29 April 1688) was Elector of Brandenburg and Duke of Prussia, thus ruler of Brandenburg-Prussia, from 1640 until his death in 1688. A member of the House of Hohenzollern , he is popularly known as " the Great Elector "  ( der Große Kurfürst ) because of his military and political achievements.
Frederick William I (German: Friedrich Wilhelm I.; 14 August 1688 – 31 May 1740), known as the "Soldier King" (German: Soldatenkönig), was King in Prussia and Elector of Brandenburg from 1713 until his death in 1740, as well as Prince of Neuchâtel.
In the German town war of 1388 he assisted Frederick V of Hohenzollern, burgrave of Nuremberg, and in 1391 did the same for the Teutonic Order against Wladislaus II of Poland. He supported Rupert III, Elector Palatine of the Rhine , in his struggle with King Wenceslaus for the German throne, probably because Wenceslaus refused to fulfill a promise to give him his sister Anna in marriage.
In 1619, the Protestant Frederick V, Elector Palatine accepted the throne of Bohemia from the Bohemian estates. This initiated the 1618–1648 Thirty Years' War, one of the most destructive conflicts in human history; it caused over eight million fatalities from military action, violence, famine and plague, the vast majority in the German states of the Holy Roman Empire.