Where does “pietruszka” come from?

pietruszka (Silesian) comes from Old Polish pietruszka, from Latin petroselīnum, from Ancient Greek πετροσέλινον, from Ancient Greek Πέτρος, from Ancient Greek πέτρος — rock, stone, boulder; type of reed.

pietruszka (Silesian): parsley

Definitions

parsley

Ancestry of “pietruszka”, step by step

Step	Language	Word	Meaning
1	Old Polish	pietruszka	parsley
2	Latin	petroselīnum	rock parsley
3	Ancient Greek	πετροσέλινον	parsley
4	Ancient Greek	Πέτρος	Peter
5	Ancient Greek	πέτρος	rock, stone, boulder; type of reed

Every word from Ancient Greek πέτρος →Every word from Ancient Greek Πέτρος →Every word from Ancient Greek πετροσέλινον →