1354 - 1394 (40 years)
| Decastilla, Constanza Reina 1354-1394 |
| Decastilla, Constanza Reina | |
| B: | 1354 |
| Spain | |
| D: | 24 Mar 1394 |
| Leicester, Leicestershire, England | |
 | Plantagenet, John of Gaunt 1340-1399 |
| Plantagenet, John of Gaunt | |
| B: | 6 Mar 1340 |
| Gent, Oost-Vlaanderen, Belgium | |
| M: | 21 Sep 1371 |
| Roquefort, Landes, Aquitaine, France | |
| D: | 3 Feb 1399 |
| Leicester, Leicestershire, England | |
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