Gerlach I, Count of Nassau

Gerlach I of Nassau (1271 – 7 January 1361), Count of Nassau in Wiesbaden, Idstein, Weilburg, and Weilnau.

He was a son of Adolf of Nassau, elected King of the Romans, and Imagina of Isenburg-Limburg.

Family and children
He was married two times. First, 1307 with Agnes, a daughter of Agnes of Bavaria, Margravine of Brandenburg-Stendal and her first husband Henry the Younger of Hesse, and hence a granddaughter of Landgrave Henry I "the Child" of Hesse and had the following children:
 * 1) Adolph I, Count of Nassau-Wiesbaden-Idstein (1307 – 17 January 1370, Idstein).
 * 2) John I, Count of Nassau-Weilburg (1309 – 20 September 1371, Weilburg).
 * 3) Gerlach (1322 – 12 February 1371, Aschaffenburg), Archbishop of Mainz.
 * 4) Adelheid (d. 8 August 1344), married 1329 to Ulrich III, Lord of Hanau.
 * 5) Agnes, a nun at Klarenthal Abbey.
 * 6) Elisabeth (c. 1326), married before 16 August 1326 to Louis of Hohenlohe.
 * 7) Marie (d. 1366), married before 1336 to Konrad of Weinsberg.

Second, he married before 4 January 1337 Irmgard of Hohenlohe-Weikersheim, daughter of Kraft II of Hohenlohe-Weikersheim and had the following children:
 * 1) Kraft of Nassau-Sonnenberg (d. 1356), fell in the Battle of Poitiers.
 * 2) Rupert, Count of Nassau-Sonnenberg (d. 4 September 1390).

Literature

 * Pierre Even: Dynastie Luxemburg-Nassau. Von den Grafen zu Nassau zu den Großherzögen von Luxemburg. Eine neunhundertjährige Herrschergeschichte in einhundert Biographien . Luxemburg 2000, S. 20–22.
 * Festschrift der Konrad-Duden-Schule in Wiesbaden-Sonnenberg 1904–1984.
 * Festschrift 875 Jahre Sonnenberg. 1126-2001. Wiesbaden 2001.
 * Gerhard Köbler: Historisches Lexikon der deutschen Länder. Die deutschen Territorien vom Mittelalter bis zur Gegenwart. 7., vollständig überarbeitete Auflage. C.H. Beck, München 2007, ISBN 978-3-406-54986-1.