He remained in Cairo till 1379, and, as he tells us, wrote some of the letters which the king sent to Europe seeking to procure his freedom.
Dardel and his companion, Brother Anthony, set out from Cairo on 11 September 1379, and reached Barcelona on 1 March 1380.
After travelling over half of Europe he barely succeeded in inducing the King of Aragon to send an embassy with gifts to the sultan.
He set out for France, paid homage there to Clement VII (the antipope), and then went on to Spain where the King of Castile received him royally.
[1] Clement VII appointed Dardel Bishop of Tortiboli in the Kingdom of Naples on 11 April 1383, as a reward for his labours on behalf of the Armenian king.