Gerlach I of Nassau

Gerlach I of Nassau (1288 – 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: Adolph I, Count of Nassau-Wiesbaden-Idstein (1307 – 17 January 1370, Idstein). John I, Count of Nassau-Weilburg (1309 – 20 September 1371, Weilburg). Gerlach von Nassau (1322 – 12 February 1371, Aschaffenburg), Archbishop of Mainz. Adelheid (d. 8 August 1344), married 1329 to Ulrich III, Lord of Hanau. Agnes, a nun at Klarenthal Abbey. Elisabeth , married before 16 August 1326 to Louis of Hohenlohe. Marie (d. 1366), married before 1336 to Konrad of Weinsberg.

Second marriage

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