A fierce battle raged where Ptolemy was, and while a band of picked Spartans under the command of Evalcus engaged the soldiers who were fighting in front of him, a man of stout arm and swift foot, Oryssus by name, of Aptera in Crete, ran up on one side of the young prince as he was fighting spiritedly, smote him, and laid him low.
Edition :
Plutarch Lives IX: Demetrius and Antony, Pyrrhus and Caius Marius, Ed. Jeffrey Henderson, trans. Bernadotte Perrin (The Loeb Classical Library 101), Harvard University Press: Cambridge/MA - London 1968 (first ed. 1920).
Remark :
thirdperson: Pyrrhus does not see his son die, but he receives the message soon after. This is mentioned in 30.5. date: The date is taken from the New Pauly.
http://referenceworks.brillonline.com/entries/brill-s-new-pauly/pyrrhus-e1015710