

| Constanza Perez, Princess of Castile-Leon | |
| B: | 1354 |
| Burgos, Castilla-Leon, Spain | |
| D: | 24 Mar 1394 |
| Leicester, Leicestershire, England | |
![]() | John le Gaunt, Duke of Lancaster |
| John le Gaunt, Duke of Lancaster | |
| B: | 24 Jun 1340 |
| Gent, Oost-Vlaanderen, Belgium | |
| M: | Sep 1371 |
| Charente-Maritime, Poitou-Charentes, France | |
| D: | 3 Feb 1399 |
| Castle, Leicester, Leicestershire, England | |
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