 The first two names he earned by the ferocity with which he repressed the disorders caused by the nobles during his long minority; the third by his victory in the Battle of Río Salado over the last formidable Marinid invasion of the Iberian Peninsula in 1340.Alfonso XI never went to the insane lengths of his son Peter of Castile, but he could be bloody in his methods.He killed for reasons of state without any form of trial.