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Castillion-sur-Agen was a medieval castle in the commune of Bon-Encontre, near Agen in Aquitaine, France.

Built on the top of a small hill with sheer rock cliffs[1] (the plateau de Castillou), it was "fortified by both nature and artifice".[2] According to the 12th-century chronicler Robert of Torigny, Henry II of England besieged Castillion-sur-Agen in 1161. After just one week the garrison capitulated.[2] Roger of Howden recorded that nearly 15 years later, in 1175, the site was besieged by Prince Richard (later King Richard I of England), Henry II's son.[3] On this occasion the siege lasted two months; it was part of a campaign of repressing rebellious barons after the Revolt of 1173–1174. It was Richard's first successful siege.[4]

See also[edit]


  1. ^ Notes historiques du chanoine DURENGUES (French)
  2. ^ a b Warren 1978, pp. 231–232.
  3. ^ Gillingham 2002, p. 52.
  4. ^ Flori, pp. 41–42.

Coordinates: 44°12′32″N 0°39′9″E / 44.20889°N 0.65250°E / 44.20889; 0.65250