Beaufort, Knight of the Garter, Commander in the English Army, Justice in Eyre, 4th English Count of Mortain, Side

• Beaufort, Knight of the Garter, Commander in the English Army, Justice in Eyre, 4th English Count of Mortain,, Sir Lord Edmund I Plantagenet 4th Earl of Somerset, 1st Earl of Dorset, 1st Marquess of Dorset, 2nd Duke of Somerset, Lord Protector of England 1406 - 1455  (49 years)

• de Beaufort, John 1371 - 1410  (39 years)
• Holand, Margaretha 1380 - 1439  (59 years)

• Plantagenet, John Gaunt King of Castile and Leon 1340 - 1399  (58 years)
• DeRoet, Katherine 1350 - 1403  (52 years)
• Holand Earl van Kent, Thomas II 1350 - 1397  (47 years)
• Stuart, Alice Fitz-Alan 1350 - 1415  (65 years)

Beauchamp, Lady of Walthamstow, Baroness of Beauchamp, Baroness of Helmsley, Baroness of Ros, 1st Countess of Dorset, Side

• Beauchamp, Lady of Walthamstow, Baroness of Beauchamp, Baroness of Helmsley, Baroness of Ros, 1st Countess of Dorset,, Lady Alianore "Eleanor" 3rd Countess of Somerset, Countess of Mortain, 1st Marchioness of Dorset, 2nd Duchess of Somerset 1408 - 1467  (~ 58 years)