Name and Epithet
The apostle is identified in the Gospels of Matthew and Mark as "Simon the Canaanite" (Greek Kananites) and in Luke and Acts as "Simon the Zealot" (Greek zelotes). Modern scholarship generally treats both as renderings of the same Aramaic or Hebrew word for "zealous," rather than a reference to the town of Cana or to the land of Canaan. Some Western writers, including Jerome and Bede, did connect the name to Cana in Galilee, which accords with the Orthodox tradition that places his origin there.
In every case the surname serves to mark him off from Simon Peter, with whom he shared the common name Simon. Orthodox tradition, citing St. Demetrius of Rostov, is careful to distinguish this Simon both from the Apostle Peter and from Simon (Symeon), the kinsman of the Lord who became the second Bishop of Jerusalem.