17 We are confident that the faithful of Spain will embrace them of their own accord, as well from their tried devotion to this Apostolic Chair, as from a sense of the benefits which are rightly to be expected from concord. Let them recall the facts of their own history; let them recognize that the glorious exploits of their ancestors at home and abroad could not have been achieved had their forces been scattered by dissensions, and were only possible owing to their perfect union. Animated by brotherly love and all inspired by the same sentiments, they triumphed over the haughty domination of the Moors, over heresy, and over schism. Let the faithful of Spain imitate the example of those from whom they have inherited faith and fame, and show that they inherit not only their ancestors' name but their virtues also.
Source: Cum Multa (Vatican.va)