16. Nicolo Polo, the second of the Brothers, had two legitimate sons, MARCO, the Author of our Book, born in 1254,[9] and MAFFEO, of whose place in the family we shall have a few words to say presently. The story opens, as we have said, in 1260, when we find the two brothers, Nicolo and Maffeo the Elder, at Constantinople. How long they had been absent from Venice we are not distinctly told. Nicolo had left his wife there behind him; Maffeo apparently was a bachelor. In the year named they started on a trading venture to the Crimea, whence a succession of openings and chances, recounted in the Introductory chapters of Marco’s work, carried them far north along the Volga, and thence first to Bokhara, and then to the Court of the Great Kaan Kúblái in the Far East, on or within the borders of CATHAY. That a great and civilized country so called existed in the extremity of Asia had already been reported in Europe by the Friars Plano Carpini (1246) and William Rubruquis (1253), who had not indeed reached its frontiers, but had met with its people at the Court of the Great Kaan in Mongolia; whilst the latter of the two with characteristic acumen had seen that they were identical with the Seres of classic fame. [Sidenote: Their intercourse with Kúblái Kaan.] 17. Kúblái had never before fallen in with European gentlemen. He was delighted with these Venetians, listened with strong interest to all that they had to tell him of the Latin world, and determined to send them back as his ambassadors to the Pope, accompanied by an officer of his own Court. His letters to the Pope, as the Polos represent them, were mainly to desire the despatch of a large body of educated missionaries to convert his people to Christianity. It is not likely that religious motives influenced Kúblái in this, but he probably desired religious aid in softening and civilizing his rude kinsmen of the Steppes, and judged, from what he saw in the Venetians and heard from them, that Europe could afford such aid of a higher quality than the degenerate Oriental Christians with whom he was familiar, or the Tibetan Lamas on whom his patronage eventually devolved when Rome so deplorably failed to meet his advances. [Sidenote: Their return home, and Marco’s appearance on the scene.] 18. The Brothers arrived at Acre in April,[10] 1269, and found that no Pope existed, for Clement IV. was dead the year before, and no new election had taken place. So they went home to Venice to see how things stood there after their absence of so many years. The wife of Nicolo was no longer among the living, but he found his son Marco a fine lad of fifteen.