[Endnote 18: (p. 11). _Duchess of Burgundy._--The Infanta Isabel, Prince Henry's sister, was niece of a King of England, viz., as Santarem says, of Henry IV, son of John, Duke of Lancaster. [By this connection our Infant was a great-grandson of Edward III, and at the same time a descendant of the last kings of the Capetian house, and likewise allied to the family of Valois. The Infanta Donna Philippa was married to the Duke of Burgundy, Philip the Good, on January 10th, 1429. She was not only endowed with very eminent qualities, but was also of rare beauty. She had great influence on public affairs. The Duke, her husband, instituted the celebrated order of the Golden Fleece to celebrate this marriage. This princess died at Dijon, December 17th, 1472. From this alliance came many descendants. She was equally beloved by her brothers, and especially by King D. Edward (Duarte), who, in his _Leal Conselheiro_ (ch. xliv, "Da Amizade"), speaks of the great affection and regret which he felt for her. The festivities which took place at Bruges on her arrival were among the most sumptuous of the Middle Ages].--S.] [Endnote 19: (p. 12). _The Philosopher_, i.e., Aristotle, in Azurara's day regarded among Christians as the "master of them that knew." The transformation of Aristotle into a storehouse of Christian theology was a long process, which was perhaps most completely successful in the hands of Thomas Aquinas.] [Endnote 20: (p. 14). _As in his Chronicle_, i.e., _The Chronicle of the Reign of Affonso V, the African_, attributed by Barros and Goes to Azurara himself, and perhaps embodied (partially) in Ruy de Pina's existing chronicle of the monarch. (See Azurara, Hakluyt Soc. ed., vol. i, Introduction, pp. lxi-lxiii.) We must notice that a little earlier (p. 13, top of our version), on Azurara's reference to Prince Henry as an "uncrowned prince" (cf. Azurara, vol. ii, Introduction, p. xix). Santarem remarks: