Line of James Smithson
Founder Smithsonian Institute, Washington
to Geoffrey V, Count of Anjou and Maine 
 

                         Geoffrey V
                         Count of Anjou and Maine 
                         1113-1151 
                             |
                             |
                         Henry II
                         King of England
                         1133-1189
                             |
                             |
                         Eleanor of England
                         1162-1214
                             |
                             |
                         Blanche of Castile
                         Regent of France
                         1188-1252
                             |
                             |
                         St. Louis IX
                         King of France
                         1214-1270
                             |
                             |
                         Philippe III "le Hardi"
                         King of France
                         1245-1285
                             |
                             |
                         Charles
                         Comte de Valois
                         1270-1325
                             |
                             |
                         Jeanne de Valois
                         1294-1342
                             |
                             |
                         Philippa of Holland & Hainault
                         1314-1369
                             |
                             |
                         John of Gaunt
                         Duke of Lancaster
                         1340-1399
                             |
                             |
                         John Beaufort
                         Earl of Somerset, Marquess of Dorset and Somerset
                         1373-1410
                             |
                             |
                         Edmund Beaufort
                         Duke of Somerset
                         1406-1455
                             |
                             |
                         Henry Beaufort
                         Duke of Somerset
                         1436-1464
                             |
                             |
                         Charles Somerset
                         1st Earl of Worcester
                         1460-1526
                             |
                             |
                         Lady Elizabeth Somerset
                             |
                             |
                         Sir John Savage
                             |
                             |
                         Sir John Savage, of Rock Savage
                         1st Baronet
                             |
                             |
                         Sir Thomas Savage
                         Viscount Savage, 2nd Baronet
                         1586-1635
                             |
                             |
                         Hon. Thomas Savage, of Beeston
                         1604-
                             |
                             |
                         Elizabeth Savage
                             |
                             |
                         Hon. Elizabeth Langdale
                             |
                             |
                         Langdale Smithson
                             |
                             |
                         Hugh (Smithson) Percy
                         1st Duke of Northumberland
                         1714-1786
                             |
                             |
                         James Smithson
                         Founder Smithsonian Institute, Washington
                         1765-1829