According to Cardinal
Leo Marsicanus, the 11th-century historian of the
Abbey of Monte Cassino, a monk of Monte Cassino named Monecaus served as provost in a "cell" (
cella) dedicated to Saint James in the Tremiti Islands during the abbacy of
Bertharius (856–83). Leo reports that in his day many charters from the time of Monecaus were still in the archives of Monte Cassino. For some reason, Leo later erased this information from his chronicle. None of the charters he mentions survive. In 883, a band of
Saracens sacked Monte Cassino and the monks went into exile for over half a century. This period must have severed relations between it and its provostries, including Tremiti. Originally the abbey was dedicated to
James the Greater and its associated with the
Virgin Mary developed gradually in the early 11th century. The earliest document referring to the abbey on San Nicola is a record of a land-grant of Bishop
Landenulf of Lucera dated to November 1005. In it the abbey is called the "monastery of the Blessed James the Apostle which is in Tremiti island". Mary was associated with the abbey for the first time in a document of 1014, where it is called the "church of Saint Mary and Saint James the Apostle which are constructed in the place that is called Tremiti". This dual association with James and Mary is a constant in the documentation from 1026 until 1059, although reference to James was dropped in a charter dated to 1023. After 1059 there is no further reference to Saint James. ==Threats to independence==