Polish Piotr

← Czech Petr (cognate)

← Ancient Greek Πέτρος (derived)

← Ancient Greek πέτρος (mention)

← Ancient Greek πέτρα (mention)

← Russian Пётр (borrowed)

→ Polish Piotrowicz (suffix)

→ Polish Pioch (suffix)

→ Polish Piotrek (suffix)

→ Polish Piotruś (suffix)

→ Polish piotrosz (affix)