ALPHONSO III. of Aragon (1285-1291), the insignificant son of the notable Peter
III., succeeded to the Spanish and Provencal possessions of
his father, but his short reign did not give him time even to
marry. His inability to resist the demands of his nobles left
a heritage of trouble in Aragon. By recognising their right
to rebel in the articles called the Union he helped to make
anarchy permanent.
Initial text from 1911 encyclopedia -- Please update as needed