Family Group Sheet| HUSBAND | | John "Duke of Lancaster" Plantagenet KG (99CX-4Y3) | | BIRTH | about March 1340 | Abbaye De St Bavon, Ghent, Flandre-Orientale (Flanders) | | DEATH | 3 February 1399 | Leicester Castle, Leicester, Leicestershire, England | | REF # | | 284572; | | REF # | | 300160; | | REF # | | 60; | | MARRIAGE | 29 September 1371 | Roquefort, near Bordeaux in France | | MARRIAGE | 13 January 1396 | Katherine Roet (GHYY-13C); Lincoln Cathedral, Lincoln, England | | MARRIAGE | 13 May 1359 | Blanche "Countess of Derby, Duchess of Lancaster" Plantagenet (LZ2B-6YG); Queen's Chapel, Reading, Berkshire, England | | FATHER | Edward III "King of England" (93RN-C7J) | | MOTHER | Philippa Hainaut (9Z8W-FY1) | | | | WIFE | | Constanza "Infanta, Duchess of Lancaster" Castilla LG (LH7Q-C3F) | | BIRTH | 1354 | Castrojeriz, Burgos, Spain | | DEATH | 24 March 1394 | Leicester Castle, Leicestershire | | REF # | | 3994366; | | REF # | | 4068889; | | REF # | | 60; | | FATHER | Pedro Castilla | | MOTHER | María Padilla |
| | | CHILDREN | | 1. | Katherine "Queen of Castile" Lancaster LG (GTWS-CB7) FEMALE | | | BIRTH | 31 March 1373 | Hertford Castle, Hertfordshire | | DEATH | 2 June 1418 | Valladolid | | REF # | | 1641506; | | REF # | | 1667238; | | REF # | | 60; |
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