Biography
Johann I. von Nassau-Weilburg was born 1309 to Gerlach I. von Nassau-Wiesbaden-Idstein (c1286-1361) and Agnes von Hessen (c1292-1332) and died 20 September 1371 Weilburg of unspecified causes. He married Gertrud von Merenberg (-1350) 1333 JL . He married Johanna von Saarbrücken (c1330-1381) 1353 JL .
Children
| Name | Birth | Death | Joined with |
| (daughter) von Nassau-Weilburg (-c1340) | |||
| Name | Birth | Death | Joined with |
| Johanne von Nassau-Weilburg (c1354-1383) | |||
| Johannette von Nassau-Weilburg (c1357-1365) | |||
| Johann von Nassau-Weilburg (c1357-1365) | |||
| Agnes von Nassau-Weilburg (c1359-1401) | |||
| Philipp I. von Nassau-Weilburg (1368-1429) | 1368 | 2 July 1429 Wiesbaden, Germany | Anna von Hohenlohe-Weikersheim (c1374-1410) Isabelle de Vaudémont (1397-1456) |
| Schonette von Nassau-Weilburg (c1370-1436) | |||
| Margarethe von Nassau-Weilburg (c1372-1427) | 1372 | 22 January 1427 | Friedrich III. von Veldenz (c1372-1444) |
Footnotes (including sources)
| ‡ General |
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