His title of El Mansur, "The Victorious," was earned by the defeat he inflicted on Alphonso VIII.
Peter died in 1285, leaving Aragon to his eldest son Alphonso, and Sicily to his second son James.
When Alphonso died in 1291 James became king of Aragon, and left his brother Frederick as regent of Sicily.
Immediately after the restoration of Alphonso XII., early in 1875, Ruiz Zorilla went to France.
Till middle life he was also lieutenant-general in Aragon for his brother and predecessor Alphonso V., whose reign was mainly spent in Italy.