This treaty having been concluded, a prince of the race of Solomon was peacefully restored to the throne of his ancestors, and the title which he assumed, "Icon Amlac," which means, "Let him be made our sovereign," was expressive of the general approbation which attended the measure. The place of confinement for the princes of the blood of Solomon was now established on the summit of the mountain of Geshen, in the province of Amhara, instead of being, as it had been for the space of two hundred years before the massacre of the princes, on the rock of Damo, in Tigré. We need not linger over the petty wars and provincial troubles which make up the Abyssinian history for several succeeding generations. About the year 1418, Prince Henry of Portugal, who was half an Englishman, being the youngest son of John I. of Portugal, by Philippina, sister of Henry IV. of England, having long turned his attention to astronomy and the higher branches of mathematics, prevailed upon his father to attempt a passage to India by sailing round the Continent of Africa; and while this expedition was, by slow degrees and repeated voyages, groping its way over the vast expanse of the Atlantic Ocean, Prince Henry suggested that, to avoid all disappointment, it would be well to attempt also to reach India by land; for it had long been reported by Christians from Jerusalem, that monks occasionally resorted to the holy city who declared themselves to be the subjects of a Christian prince, whose dominions were in the heart of Africa. The King of Portugal, therefore, determined to send ambassadors in search of this country, which was supposed to be governed by Prester John; and accordingly, Peter Covillan and Alphonso de Paiva sailed for Alexandria, carrying with them a rude map which had been constructed under the direction of Prince Henry. Embarking on the Red Sea, they sailed beyond the Straits of Babelmandel. Alphonso de Paiva died; but Covillan, after a series of adventures, reached Shoa, where the court of Abyssinia then resided; and here he was greeted by the fatal intelligence, that an ancient law of the country forbade him ever to revisit his native clime; that no stranger was ever permitted to depart; that Abyssinia was but too truly the bourne from which no traveller returns; and Covillan, in fact, never did return to Europe.