Where does “Piers” come from?

Piers comes from Old French Piers, a variant of Old French Pierre, the French form of the name Peter.

Ancestry of “Piers”, step by step

Step	Language	Word	Meaning
1	Old French	Piers	—
2	Latin	Petrus	Peter
3	Indonesian	penembak	shooter
4	Indonesian	tembak	to shoot to fire a shot
5	Malay	tembak	to shoot
6	Malay	timbak	Obsolete form of tembak
7	Proto-Malayic	timbak	—
8	Proto-Malayo-Polynesian	ti(m)bak	—