Where does “Simon” come from?

Simon (Old Portuguese) comes from Latin Simon, from Ancient Greek Σίμων, from Hebrew שִׁמְעוֹן — Simon; hearkening, listening.

Ancestry of “Simon”, step by step

Step	Language	Word	Meaning
1	Latin	Simon	—
2	Ancient Greek	Σίμων	Simon or Simo, a common Ancient Greek name held by one of the Telchines and often used as a Greek counterpart to the Hebrew שמעון (cf. Σῠμεών)
3	Hebrew	שִׁמְעוֹן	Simon; hearkening, listening