found: Maurice, C. E. Life of Frederick William, the Great Elector of Brandenburg, 1981:t.p. (Frederick William)
found: Encyc. Brit., 1980(Frederick William, the Great Elector, of Brandenburg; b. 2/16/1620; d. 5/9/1688)
found: Officer in His Highness's army. An exact and compleat diary of the siege of Keyserwaer and Bonne by the confederate armies under the command of His Electoral Highness of Brandenburg, 1689.
found: Rote Adler an Afrikas Küste, c1993:p. facing t.p. (Kurfürst Friedrich Wilhelm I)
found: Wikipedia, May 26, 2020(Frederick William, Elector of Brandenburg; Frederick William (German: Friedrich Wilhelm) born 16 February 1620 in Stadtschloss, Berlin, Brandenburg-Prussia; died 29 April 1688 in Stadtschloss, Potsdam, Brandenburg-Prussia; 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; he was the son of George William, Elector of Brandenburg (1595-1640), and Elisabeth Charlotte of the Palatinate; he was succeeded by his son, Frederick I of Prussia (1657-1713), also known as Frederick III, Elector of Brandenburg)
found: Encyclopaedia Britannica, via WWW, May 26, 2020(Frederick William, Elector of Brandenburg; Frederick William, byname The Great Elector, German Der Grosse Kurfürst, (born Feb. 16, 1620, Cölln, near Berlin--died May 9, 1688, Potsdam, near Berlin), elector of Brandenburg (1640-1688), who restored the Hohenzollern dominions after the devastations of the Thirty Years' War--centralizing the political administration, reorganizing the state finances, rebuilding towns and cities, developing a strong army, and acquiring clear sovereignty over ducal Prussia; all these measures contributed to the foundation of the future Prussian monarchy)
