3rd Earl of Somerset, 1st Earl of Kendal, 1st Duke of Somerset Sir John Beaufort

de Beaufort Side

• de Beaufort, 1st Earl of Somerset, 1st Marquess of Somerset, 1st Marquess of Dorset John 1373 - 1410  (36 years)

• de Gaunt, Earl of Richmond, Earl of Derby, Earl of Lancaster, Lord of Beaufort and Nogent, Earl of Lincoln, Earl of Leicester, Earl of Derby, Duke of Lancaster, Lord de Bergerac et Roche-sur-Yon, Duke of Aquitaine John 1340 - 1399  (~ 57 years)
• Roët, Lady Companion, Order of the Garter Katherine 1350 - 1403  (52 years)

• 1st Earl of Chester, Comte de Ponthieu et Montreuil, Duc d'Aquitaine, King Edward III of England Edward III 1312 - 1377  (64 years)
• De Hainaut, Queen of England Phillipa 1311 - 1369  (58 years)
• Roet, Sir Payne De Abt 1315 - 1380  (~ 65 years)
• of Hainault, Catherine 1320 - Aft 1375  (56 years)

De Holand Side

• De Holand, Duchess of Clarence Lady Margaret 1386 - 1439  (53 years)

• De Holand, 2nd Earl of Kent Thomas 1354 - 1397  (43 years)
• Fitzalan, Countess of Kent Alice Abt 1352 - 1416  (~ 64 years)

• De Holand, 1st Earl of Kent Thomas 1314 - 1360  (46 years)
• of Kent, Countess of Kent, Baroness Wake of Liddell, Lady Companion, Order of the Garter Joan 1328 - 1385  (56 years)
• Fitzalan, 10th Earl of Arundel, Earl of Surrey Richard Abt 1313 - 1376  (~ 63 years)
• Plantagenet, Lady Eleanor 1318 - 1372  (~ 61 years)