Johann IV. von Nassau-Dillenburg, Graf von Nassau-Dillenburg in Vianden und Diez, Herr von der Lek, Herr von Breda, was born 1 August 1410 in Dillenburg, Germany to Engelbert I. von Nassau-Dillenburg (1375-1442) and Johanna van Polanen (1392-1445) and died 3 February 1475 Dillenburg, Germany of unspecified causes. He married Maria von Loon-Heinsberg (1426-1502) 1440 JL .
Children
| Name | Birth | Death | Joined with |
| Anna von Nassau-Dillenburg (c1441-1513) | 1441 | 8 April 1513 Celle, Germany | Otto V. von Braunschweig-Lüneburg (1438-1471) Philipp von Katzenelnbogen (1402-1479) |
| Johanna von Nassau (1444-1488) | 1444 | 1488 | Philipp I. von Waldeck (1445-1475) |
| Odilia von Nassau (1445-1493) | |||
| Adriana von Nassau-Dillenburg (1449-1477) | 7 February 1449 Breda, Netherlands | 15 January 1477 | Philipp III. von Hanau-Münzenberg (1449-1500) |
| Engelbert II von Nassau-Breda (1451-1504) | |||
| Johann von Nassau-Dillenburg (1455-1516) | 9 November 1455 Breda, Netherlands | 30 July 1516 Dillenburg, Hesse, Germany | Elisabeth von Hessen (1466-1523) |
Footnotes (including sources)
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