Eulalios

Eulalios was a Byzantine Greek painter who lived during the 12th century, a time in which most art was done anonymously. His name was noted by several writers of the time who also described his paintings, such as Nicephorus Callistus and Nicholas Mesarites. Of his works, the most famed was the dome of the now-demolished Church of the [Holy Apostles] in Constantinople. The painting is a depiction of Christ Pantocrator.
Nicephorus Callistus' description of the painting:
'''Nicholas Mesarites' description of the painting:'''