John I, Count of Nassau-Weilburg

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John I of Nassau-Weilburg (1309–1371) was Count of Nassau-Weilburg from 1355 to 1371.

John I was the second son of Count Gerlach I of Nassau-Wiesbaden and Agnes of Hesse, granddaughter of Henry I, Landgrave of Hesse. On Gerlach I abdication in 1346, John and his brothers divided the family lands. John acquired Weilburg on the Lahn.

John was adopted by Emperor Charles IV in 1366 and elevated to Imperial Count. He died on September 20, 1371.

Family and children

John I was married twice. His first marriage in 1333 was to Gertrude of Merenberg (d. 1350), daughter and heiress of Hartrad, the last Lord of Merenberg and Gleiberg. Gertrude died on October 6, 1350 and was buried in Weilburg. The couple had one child, a daughter. She was engaged in 1340 with Reinhard II of Westerburg, but died shortly thereafter.

John I's second marriage in 1353 was to Johanna of Saarbrücken, Dame de Commercy and heiress of Count John II of Saarbrücken. This union produced seven children:

  1. Johanna (1362–1383), married in Kassel in 1377 to Hermann II, Landgrave of Hesse (ca. 1342 – June 10, 1413). Johanna died on January 1, 1383 in Marburg and was buried.
  2. John, and
  3. Johannette (twins, died October 6, 1365).
  4. Agnes (died 1401), married in 1382 to Count Simon III Wecker of Zweibrücken-Bitsch.
  5. Philipp I of Nassau-Weilburg
  6. Schonetta (d. 25 April 1436), married:
    1. on 30 June 1384 to Henry X of Homburg;
    2. in 1414 to Otto II, Duke of Brunswick-Osterode.
  7. Margarete (d. 22 January 1427), married ca. 1393 to Count Frederick III of Veldenz.

Ancestors

Family of John I, Count of Nassau-Weilburg
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
16. Henry II of Nassau
 
 
 
 
 
 
 
8. Walram II of Nassau
 
 
 
 
 
 
 
 
 
 
 
17. Matilda of Guelders
 
 
 
 
 
 
 
4. Adolf of Germany
 
 
 
 
 
 
 
 
 
 
 
 
 
 
18. Diether IV of Katzenelnbogen
 
 
 
 
 
 
 
9. Adelheid of Katzenelnbogen
 
 
 
 
 
 
 
 
 
 
 
2. Gerlach I of Nassau-Wiesbaden
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
20. Henry I of Isenburg-Grenzau
 
 
 
 
 
 
 
10. Gerlach IV of Isenburg-Limburg
 
 
 
 
 
 
 
 
 
 
 
21. Irmingard of Bündingen
 
 
 
 
 
 
 
5. Imagina of Isenburg-Limburg
 
 
 
 
 
 
 
 
 
 
 
 
 
 
22. Henry of Blieskastel
 
 
 
 
 
 
 
11. Imagina of Blieskastel
 
 
 
 
 
 
 
 
 
 
 
23. Agnes of Sayn
 
 
 
 
 
 
 
1. John I of Nassau-Weilburg
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
24. Henry II of Brabant
 
 
 
 
 
 
 
12. Henry I of Hesse
 
 
 
 
 
 
 
 
 
 
 
25. Sophie of Thuringia
 
 
 
 
 
 
 
6. Henry the Younger of Hesse
 
 
 
 
 
 
 
 
 
 
 
 
 
 
26. Otto I, Duke of Brunswick-Lüneburg
 
 
 
 
 
 
 
13. Adelaide of Brunswick
 
 
 
 
 
 
 
 
 
 
 
27. Matilda of Brandenburg
 
 
 
 
 
 
 
3. Agnes of Hesse
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
28. Otto II Wittelsbach, Duke of Bavaria
 
 
 
 
 
 
 
14. Louis II, Duke of Bavaria
 
 
 
 
 
 
 
 
 
 
 
29. Agnes of the Palatinate
 
 
 
 
 
 
 
7. Agnes of Bavaria
 
 
 
 
 
 
 
 
 
 
 
 
 
 
30. Rudolph I of Germany
 
 
 
 
 
 
 
15. Matilda of Habsburg
 
 
 
 
 
 
 
 
 
 
 
31. Gertrude of Hohenburg
 
 
 
 
 
 

Sources

  • Lua error in package.lua at line 80: module 'strict' not found., p. 25.
John I, Count of Nassau-Weilburg
Born: 1309 Died: 20 September 1371
Preceded by Count of Nassau-Weilburg
1355–1371
Succeeded by
Philipp I

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