Duke of Lancaster John Plantagenet and Catherine Swynford Roet Family
m. 13 Jan 1396-
Male
Duke of Lancaster John Plantagenet
Birth Mar 1340 St. Bavon's Abbey, Ghent, Flanders, Netherlands 
Death 3 Feb 1399 Leicester Castle, Leicester, Leicestershire, England, United Kingdom Burial Marriage 13 Jan 1396 Lincoln Cathedral, Lincoln, Lincolnshire, England, United Kingdom Other Spouse Countess of Derby Blanche Plantagenet | F1800 Marriage 19 May 1359 Reading Abbey, Reading, Berkshire, England, United Kingdom Father King of England Edward Plantagenet, III | F1600 Group Sheet Mother Philippa, of Hainault | F1600 Group Sheet
Female
Catherine Swynford Roet
Birth 1350 Death 10 May 1403 Lincoln, Placer, California, United States Burial Father Sir Payne Roet | F2024 Group Sheet Mother
Male
+ Earl of Somerset John Beaufort
Birth 1373 Death 16 Mar 1410 St. Katherine by the Tower, London, Greater London, England, United Kingdom Burial Spouse Margaret Holland | F1801 Marriage 28 Sep 1397
Female
+ Joan Beaufort
Birth 1379 Westminster, Middlesex, England, United Kingdom Death 15 Jul 1445 Dunbar Castle, Dunbar, East Lothian, Scotland, United Kingdom Burial Spouse James Steward | F2022 Marriage 1438 Saint Andrews, Scotland, United Kingdom