Isaac Komnenos

Isaac Komnenos (c. 1113 to after 1154) was the third son of Byzantine Emperor John II Komnenos (whose reign is not well recorded). The emperor's two elder sons, Alexios (who'd reigned as co-emperor) and Andronikos, had predeceased him. John II named his fourth son, Manuel, as his successor, despite Isaac's popularity with the clergy, the people, and the military. Isaac did not oppose his younger brother, and while the two shared an uneasy relationship, Isaac remained loyal to Manuel and campaigned against the Turks.

The date of Isaac's death is uncertain. He appears to have been married twice, producing seven children, several of whom were married off by Manuel to foreign rulers.

Isaac Komnenos in "Two Thieves"
Like everyone who lived and died on planet Earth, Isaac Komnenos was resurrected after his death with a physical age of twenty-five on Riverworld He became right-hand man of his brother, Alexios, the Basileus of New Constantinople.