Where does “persille” come from?

persille (Norwegian Nynorsk) comes from German Petersilie, from Medieval Latin petrocilium, from Latin petroselīnum, from Ancient Greek πετροσέλινον, from Ancient Greek Πέτρος, from Ancient Greek πέτρος — rock, stone, boulder; type of reed.

persille (Norwegian Nynorsk): parsley, Petroselinum crispum

Definitions

parsley, Petroselinum crispum

Ancestry of “persille”, step by step

Step	Language	Word	Meaning
1	German	Petersilie	parsley, "Petroselinum crispum"
2	Medieval Latin	petrocilium	—
3	Latin	petroselīnum	rock parsley
4	Ancient Greek	πετροσέλινον	parsley
5	Ancient Greek	Πέτρος	Peter
6	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 →