Medieval Lithuania was the last state in Europe to accept Christianity: officially, pagan Lithuanians converted to Roman Catholicism in 1387; the westernmost part of the country, known as ?emaitija (Samogitia), became ‘Christian’ only in 1417, when the diocese of Medininkai was established by the commission of the Council of Constance and through the good offices of King Jogaila of Poland and Grand Duke Vytautas of Lithuania. It took almost a millennium from Clovis to Jogaila to complete the project known as Christian Europe: eleventh-hour Christians arrived not long before the Discovery of the New World and the final break-up of medieval Christendom. The aim of this book is to reconstruct the road the medieval Lithuanians took tip-toeing a delicate line between Latin and Greek Christendom.