| Gausbert-Borrelh d’Orgueil - Lord and donor | First known lord (donation to Moissac in 1114). |
| Guillaume de Albaro - Co-Lord and Knight | Son of Guiraud de Gourdon, cited in 1249. |
| Philippe IV le Bel - King of France | Established a royal bayle in 1292 to control Organ. |
| Jean d’Armagnac - Count of Armagnac | Buy the castrum in 1389 for 11,000 francs. |
| Gaillard de Durfort-Duras - Garrison Chief | Last occupied "English" in 1389. |
| Marie Hélène Pottier-Briand - Archaeologist | Directs rescue searches (1982-1984). |