John Mystikos

He eventually recovered a place at court, leading a three-year mission abroad in the 930s, and apparently regained his former high position with the rise of Constantine VII Porphyrogennetos to sole rule in 945.

[2][4] According to Steven Runciman, the event was possibly connected with the rise of John to greater prominence in the affairs of state, which had hitherto been dominated by the Patriarch Nicholas, whose health was now failing.

Romanos initially refused to believe the accusations, but his rivals managed to collect sufficient proof that John was forced to flee to the Monokastanon Monastery and become a monk along with his friend Constantine Boilas, while his father-in-law was arrested and flogged.

[2] Following the fall of Romanos I and the restoration of Constantine VII (r. 913–959) to sole imperial power in January 945, John apparently regained his prominent position and influence at court, as indicated by a letter addressed to him by the Metropolitan of Nicaea Alexander, asking for his intervention to secure his recall from exile on the Crimea.

John and his Arab counterpart then took ship from Tarsus to Constantinople, where an embassy sent by the new ruler of northern Syria, Sayf al-Dawla (r. 945–967) awaited to continue negotiations.