Andrija Jamometic, a descendant of noble family from the town of Nin on Croatian littoral, was born in 1420-30, and died around 1486. He obtained excellent education in Padova, and later became outstanding diplomat in the service of Pope Sixto IV, tsar Friedrich III, and free cities like Nürnberg. In the Dominican convent in Udine (Italy) there was his portrait (now lost), with the following inscription: Brother Andrija, Croat, member of Udinese convent, famous for his knowledge of theological science and connoisseur of foreign languages. Pope Sixto IV apppointed him Archbishop of Granea in Greece. He was deeply involved in Ecumenical questions related to delicate relations between Eastern and Western Christianity. He also insisted on the necessity to save Constantinople and Eastern Europe from Turkish onslaughts. In his letter written in 1482 to many European rulers, Jamometic sent an appeal to organize the Third General Church Council to discuss Ecumenical questions, and to continue the unfinished Basel Council. He also sent an appeal to many universities, for example, to theological faculties in Vienna, Paris, Köln, Louvain, Krakow, and other similar institutions throughout Europe. His tragic destiny was similar to that of Thomas More about 50 years later.