Constantine Palaiologos
Constantine Palaiologos (1261–1306) was the third son of Emperor Michael VIII and Theodora Palaiologina, born in Constantinople just after its recovery from the Latins, a porphyrogennetos or purple-born prince. He married Irene Palaiologina Raoulaina, with whom he had a son, John.
In 1280 he campaigned in Asia Minor, clearing Turkish raiders from the Maeander valley. In 1293 he was slandered to his brother Emperor Andronikos II and imprisoned; he later became a monk named Athanasios and died in Constantinople on 5 May 1306.