Where does “Pilate” come from?

Pilate derives from Latin Pilatus, formed from pilum meaning javelin with the suffix -atus, ultimately from Proto-Indo-European peys-.

Ancestry of “Pilate”, step by step

Step	Language	Word	Meaning
1	Latin	Pīlātus	—
2	Latin	pīlum	—
3	Proto-Italic	pistlom	—
4	Proto-Indo-European	pis-tlo-	—
5	Proto-Indo-European	peys-	to grind, to crush

Pilate — Etymology, Origin & Word History | Etymology Explorer