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John
'Count of Montfort'
(lived one month)

Katherine de Roét Plantagenet a.k.a. Swynford
1st Spouse: Hugh Otto Swynford
2nd Spouse: John Plantagenet, of Ghent

Philippa de Roét
Spouse: Geoffrey Chaucer

Isabel 'Elizabeth' de Roét
Canoness of the convent of Saint Waltrude Collegiate Church at Mons, Hainaut

Walter de Roét

John Beaufort,
1st Earl of Somerset'
'1st Marquess of Somerset'
'1st Marquess of Dorset'
Knight of the Garter
Spouse: Margaret Holland

Henry Beaufort
'Bishop of Lincoln'
'Cardinal'
Paramour Mistress: Alice FitzAlan

Thomas Beaufort
'Duke of Exeter'
Spouse: Margaret Neville, of Hornby

Joan Beaufort
'Countess of Westmoreland'
1st Spouse: Robert Ferrers
'5th Baron Boteler, of Wem'
2nd Spouse: Ralph de Neville
'1st Earl of Westmorland'

Henry Beaufort
'2nd Earl of Somerset'
(died age 17 years, unmarried)

John Beaufort
'Duke of Somerset'
Spouse: Margaret Beauchamp, of Bletso

 

Joan Beaufort
'Queen of Scotland'
1st Spouse: James I, Stewart, of Scotland
2nd Spouse: James Stewart, 'Black Knight of Lorne'

Thomas Beaufort
'Count of Perche'
(died unmarried)

Edmund Beaufort
'2nd Duke of Somerset'
'4th Earl of Soemrset'
'1st Earl of Dorset'
'1st Marquess of Dorset'
styled, '1st Count of Mortain'
Spouse: Eleanor Beauchamp

 

Margaret Beaufort
'Countess of Devon'
Spouse: Thomas de Courtenay, '13th Earl of Devon'

Margaret Stewart
'Dauphine of France'
'Dauphine of Viennois'
Spouse: Dauphin Louis
(future Louis XI, of France
at Tours, 24 June 1436)

Joan Stewart
'Countess of Morton'
Spouse: James Douglas
'1st Earl of Morton'

Isabella Stewart, of Scotland
'Duchess of Brittany'
Spouse: Francis I,
'Duke of Brittany'
'Count of Montfort'
titular 'Earl of Richmond'

Alexander Stewart
'Duke of Rothesay'

(Heir Apparent to the Scottish Throne)

Eleanor Stewart
Spouse: Sigismund
'Archduke of Austria'

James II, Stewart
'King of Scotland'
Spouse: Mary, of Guelders

Mary Stewart
'Countess of Buchan'
Spouse: Wolfert VI, of Borselen

Princess Annabella Stewart
'Countess of Huntly'
1st Spouse: Louis, of Savoy
'Count of Geneva'
2nd Spouse: George Gordon
'2nd Earl of Huntly'

Margaret, of Brittany
'Duchess consort of Brittany'
Spouse: Francis II
'Duke of Brittany'

John
'Count of Montfort'
(lived 1 month)

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