Where does “Pompey” come from?

Pompey is the English form of Latin Pompeius, derived from Oscan 𐌐𐌖𐌌𐌐𐌄, ultimately from Proto-Indo-European pénkʷe.

Ancestry of “Pompey”, step by step

Step	Language	Word	Meaning
1	Middle English	Pompey	—
2	Latin	Pompeius	—
3	Oscan	*pompe	—
4	Proto-Italic	kʷenkʷe	five
5	Proto-Indo-European	pénkʷe	five

Pompey — Etymology, Origin & Word History | Etymology Explorer