Where does “Petrachi” come from?

Petrachi (Romanian) comes from Greek Πετράκης, from Greek Πέτρος, from Ancient Greek Πέτρος, from Ancient Greek πέτρος — rock, stone, boulder; type of reed.

Ancestry of “Petrachi”, step by step

Step	Language	Word	Meaning
1	Greek	Πετράκης	—
2	Greek	Πέτρος	Peter
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 Greek Πέτρος →