[1] Originally from Mallawi in Egypt, he was a monk in the Monastery of Saint Anthony before being consecrated Patriarch on the 7th day of Thout, 1336 A.M. (September 18, 1619 A.D.).
[2] Known for his great modesty and piety, John XV was devoted to ministry, prayer, and worship.
He exemplified zeal in guiding the Coptic church and in showing compassion to his priests, the poor, and strangers.
While staying in a house John reportedly rebuked the owner for keeping concubines.
John died shortly afterward and was buried in the monastery of the Saint Anba Bishih in El-Bayadia, Egypt; he was patriarch for nine years, eleven months and twenty-two days.