[1][2] In 839, and again in 840, the territory of Bisciglie was attacked and devastated by the Saracens (Arabs and Moors from north Africa).

[3] On 1 October 1071 Bishop Giovanni was present at the consecration of the church of the Monastery of Montecassino by Pope Alexander II.

[4] In 1079, Robert Guiscard, who had taken the title of Duke of Apulia, met his vassals at Melfi.

Guiscard therefore campaigned against Trani, Bisceglie, Giovennazo, Corato and Andria, and took prisoners.

[11] The diocese of Biceglie had two Collegiate Churches, S. Adoeno (with an Abbot curate, nine Canons, and six chaplains)[12] and Ss.