+------------+----------------+ +------------+-------------------------------------+---------------+-----------+ | | | | | | | JOHN II., = Leonor, dau. of Joanna, Diogo, third EMMANUEL = (1) Isabella of Castile, Leonor = Isabel= “the | Ferdinand, b. 1452; Duke of Viseu; Duke of widow of Dom John II. Ferdinand, Perfect,” | Duke of Viseu d. 1490. murdered by Beja, Affonso; | Duke of b. 1455; | and Beja. John II., king, (2) Maria of Castile. | Braganza. king, | 1485. 1495. | (For descendants, 1481; | (For descendants, see | see Table III., d. 1495. | Table II., p. 279.) | p. 303.) +---+--------------------------------------------------------------------------------+ | Affonso, = Isabella, eldest dau. of Ferdinand d. 1491. and Isabella of Castile and Aragon. [Illustration: text decoration] VII. THE PORTUGUESE EXPLORERS. The internal history of Portugal under the rule of John “the Great,” his son Edward, and his grandson Affonso V., has an interest of its own, yet it is not at home that the most important development of Portuguese energy is to be perceived. Great as were the services rendered to Portugal by King John, they mark no stages in the progress of Europe as the achievements of Dom Henry, his son, have done. Around the name of this prince, the discoveries of the Portuguese navigators may best be grouped, for he was the guiding spirit of these adventurers, and alike inspired and rewarded them.