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.
But the younger son of Friedrich VIII, called Friedrich of Strassburg, uniquely, took no numeral of his own, retaining the old title "Count of Zollern" and pre-deceased his brother in 1364/65. Prince Wilhelm Karl zu Isenburg's 1957 genealogical series, Europäische Stammtafeln , says Friedrich of Strassburg shared, rather, in the rule of Zollern with his elder brother until his premature death.
Friedrich III. (ermordet 5. Februar 1087 bei Zscheiplitz), dessen Sohn; Friedrich IV. von Putelendorf (Bottendorf an der Unstrut) († 1125 wohl 26. Juni in Dingelstedt am Huy), dessen Sohn, 1114 Pfalzgraf; Friedrich V. vom Sommerschenburg († 18. Oktober 1120/21), Enkel Friedrichs I., Pfalzgraf in Sachsen 1097, Pfalzgraf von Sachsen 1111 ...
05/07/2015 · m (Stuttgart 28 Aug 1709) her first cousin, WILHELM FRIEDRICH Markgraf von Brandenburg-Ansbach, son of JOHANN FRIEDRICH Markgraf von Brandenburg-Ansbach & his second wife Eleonore Erdmuthe Luise Herzogin von Sachsen-Eisenach (Ansbach 29 Dec 1685/8 Jan 1686-Schloß Reichenbach 7 Jan 1723, bur Ansbach). 14.