Where does “Πουλχερία” come from?

Πουλχερία (Ancient Greek) comes from Latin pulcher, from Latin polcher.

Ancestry of “Πουλχερία”, step by step

Step	Language	Word	Meaning
1	Latin	pulcher	beautiful, fair, pretty; noble, honorable,...
2	Latin	polcher	—

Πουλχερία — Etymology, Origin & Word History | Etymology Explorer