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Family: John (Plantagenet), of Gaunt, 1st Duke of Lancaster / Katharine de Roet (F248)

• Father | Male John (Plantagenet), of Gaunt, 1st Duke of Lancaster

  
  

  Born	March 1340	St. Bavo's Abbey, Ghent, Belgium
  Died	3 Feb. 1398/99	Leicester Castle, Leicester, Leicestershire, England
  Buried	16 March 1398/99	Old St. Paul's Cathedral, London, Middlesex, England
  Married	13 Jan. 1396/97  [1, 2]	Lincoln Cathedral, Lincoln, Lincolnshire, England  [1, 2]
  Other Spouse	Blanche (Plantagenet), of Lancaster | F240
  Married	19 May 1359	Reading, Berkshire, England
  Other Spouse	Constance (Ivrea), of Castile | F245
  Married	Sept. 1371
  Father	Edward III (Plantagenet), King of England | F228 Group Sheet
  Mother	Philippa (Avesnes), of Hainault | F228 Group Sheet

  
  

  Mother | Female Katharine de Roet

  
  

  Born
  Died	10 May 1403	Lincoln, Lincolnshire, England
  Buried		Angel Choir, Lincoln Cathedral, Lincoln, Lincolnshire, England
  Other Spouse	Sir Hugh Swynford | F249
  Married
  Father	Sir Payne Roet, of Hainault | F250 Group Sheet
  Mother

  
  

  Child 1 | Male + John (Beaufort), Earl of Somerset, Marquess of Dorset

  
  

  Born	circa 1372
  Died	16 March 1410
  Buried
  Spouse	Lady Margaret Holand | F251
  Married	circa 1399

  
  

  Child 2 | Male His Eminence Henry (Beaufort), Cardinal Beaufort

  
  

  Born	circa 1375
  Died	11 April 1447	Wolvesey Castle, Winchester, Hampshire, England
  Buried		Winchester Cathedral, Winchester, Hampshire, England

  
  

  Child 3 | Female + Lady Joan Beaufort

  
  

  Born
  Died	13 Nov. 1440	Howden, Yorkshire, England
  Buried		Lincoln Cathedral, Lincoln, Lincolnshire, England
  Spouse	Sir Robert Ferrers | F490
  Married
  Spouse	Ralph (de Neville), 1st Earl of Westmorland | F487
  Married

  
  

• Notes

  The Beaufort children were legitimated by papal bull in September 1396 and by royal patent the following February. [2]

  
  

• Sources

  [S8] BP 1970, Peter Townend (ed.), (London: Burke's Peerage Ltd., 1970), page liii. [S9] Oxford D.N.B., H. C. G. Matthew (ed.), (Oxford: Oxford University Press, 2004), Simon Walker, "Katherine [née Katherine Roelt; married name Katherine Swynford], duchess of Lancaster (1350?–1403), mistress and third wife of John of Gaunt, duke of Lancaster".

  
  

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