Where does “perresil” come from?

perresil (Old French) comes from Latin petroselinum, from Ancient Greek πετροσέλινον, from Ancient Greek Πέτρος, from Ancient Greek πέτρος — rock, stone, boulder; type of reed.

Ancestry of “perresil”, step by step

Step	Language	Word	Meaning
1	Latin	petroselinum	rock parsley
2	Ancient Greek	πετροσέλινον	parsley
3	Ancient Greek	Πέτρος	Peter
4	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 →