Biography
Wilhelm I. von Katzenelnbogen, Graf von Katzenelnbogen, was born circa 1263 to Diether V. von Katzenelnbogen (c1225-1276) and Magarethe von Jülich (c1238-1292) and died 18 November 1331 of unspecified causes. He married Adelheid von Waldeck (c1285-1329) 23 January 1314 JL . He married Jeanne de Montbéliard (c1290-c1349) .
Children
| Name | Birth | Death | Joined with |
| Johann von Katzenelnbogen (c1314) | |||
| Jutte von Katzenelnbogen (c1315) | |||
| Anna von Katzenelnbogen (c1316-aft1350) | |||
| Elisabeth von Katzenelnbogen (c1317-1368) | |||
| Agnes von Katzenelnbogen (c1318) | |||
| Wilhelm II. von Katzenelnbogen (c1319-1385) | |||
| Diether von Katzenelnbogen (c1320-1350) | |||
| Bertold von Katzenelnbogen (c1321) | |||
| Eberhard V. von Katzenelnbogen (c1322-1402) | 1322 | 9 December 1402 | Agnes von Diez (c1324-1399) |