Hugo Eterianus

Hugh Etherianus, or Ugo Eteriano (1115–1182), was an adviser on western church affairs to Byzantine emperor Manuel Comnenus. Nothing is known of his family apart from a letter sent after his death by the Pope to his brother Leo, nicknamed Tuscus, which mentions a "nephew", possibly Hugh's son. He studied under Alberic in Paris some time before 1146, then was in Constantinople from about 1165–82. He and his brother Leo Tuscus, were Tuscans by birth, employed at the court of Constantinople under the Emperor Manuel I Comnenus. Hugh was a Catholic theologian and controversialist, who became a Cardinal at the end of his life. He was born in Pisa and died in Constantinople.