The Prester John legend as such began in the early 12th century with reports of visits of an Archbishop of India to Constantinople, and of a Patriarch of India to Rome at the time of Pope Callixtus II. These visits, apparently from the Saint Thomas Christians of India, cannot be confirmed, evidence of both being secondhand reports. What is certain is that German chronicler Otto of Freising reported in his "Chronicon" of 1145 that the previous year he had met Hugh, bishop of Jabala in Syria, at the court of Pope Eugene III in Viterbo. Hugh was an emissary of Prince Raymond of Antioch, sent to seek Western aid against the Saracens after the Siege of Edessa; his counsel inspired Eugene to call for the Second Crusade. Hugh told Otto, in the presence of the pope, that Prester John, a Nestorian Christian who served in the dual position of priest and king, had regained the city of Ecbatana from the brother monarchs of Medes and Persia, the Samiardi, in a great battle "not many years ago". Afterwards Prester John allegedly set out for Jerusalem to rescue the Holy Land, but the swollen waters of the Tigris compelled him to return to his own country. His fabulous wealth was demonstrated by his emerald scepter; his holiness by his descent from the Three Magi.