The loss of significant Byzantine and post-Byzantine documents from the archives of the Monastery deprives us of the ability to understand the history of the Monastery during the following Byzantine centuries in sufficient depth. Surviving documents provide us with sporadic information, such as the conquest of the Monastery in 1285 by pirates and the subsequent slaughter of many monks, while in 1307, the Monastery was looted by Catalan mercenaries.
However, around the 14th century, the Monastery was put under royal protection, and is characterised in documents from this period as the ‘venerable royal monastery’. During this period, important construction projects were carried out.
