Johann Sigismund von Brandenburg, Markgraf von Brandenburg, Kurfürst von Brandenburg, Administrator des Herzogtums Preußen, was born 8 November 1572 in Halle, Saxony-Anhalt, Germany to Joachim III. Frederick von Brandenburg (1546-1608) and Katharina von Brandenburg-Küstrin (1549-1602) and died 2 January 1620 Berlin, Germany of unspecified causes. He married Anna von Preußen (1576-1625) 30 October 1594 in Königsberg, Russia.
Siblings
| Name | Birth | Death | Joined with |
| Marie Eleonore von Brandenburg (1607-1675) | |||
Children
| Name | Birth | Death | Joined with |
| Georg Wilhelm von Brandenburg (1595-1640) | 13 November 1595 Berlin, Germany | 1 December 1640 Königsberg, Russia (Prussia) | Elisabeth Charlotte von der Pfalz (1597-1660) |
| Anna Sophia von Brandenburg (1598-29) | |||
| Maria Eleonora von Brandenburg (1599-1655) | 21 November 1599 Königsberg (Prussia) | 28 March 1655 Stockholm, Sweden | Gustav II Adolf of Sweden (1594-1632) |
| Katharine von Brandenburg (1602-1644) | |||
| Joachim Sigismund von Brandenburg (1603-1625) | |||
| Agnes von Brandenburg (1606-1607) | |||
| Johann Friedrich von Brandenburg (1607-1608) | |||
| Albrecht Christian von Brandenburg (1609-1609) | |||
Johann Sigismund von Brandenburg (1572-1620) Born: 8 November 1572 Died: 23 December 1619
| ||
| Regnal titles | ||
|---|---|---|
| Preceded by Joachim Frederick |
Elector of Brandenburg 1608–1619 |
Succeeded by George William |
| Margrave of Brandenburg 1608–1619 | ||
| Preceded by Albert Frederick |
Duke of Prussia vassal of Poland 1618–1619 | |
| Vacant Treaty of Xanten Title last held by John William
|
Duke of Cleves, Count of Mark, Count of Ravensburg 1614–1619 |
Incorporated into Brandenburg |
Footnotes (including sources)
| ‡ General |
|
