Petek Family History
Petek Name Meaning
Slovenian and Croatian (northern Croatia): nickname from Slovenian (and Croatian dialect) peti ‘fifth’ or from petek ‘Friday’, perhaps denoting a child born as a fifth child or on a Friday, or (more probably) denoting an ill-fated person, because Friday was considered unlucky in the Middle Ages. This is a very frequent Slovenian surname. Hungarian: either a borrowing of the Slovenian name or from a pet form of the personal name Péter, Hungarian form of Peter.
Source: Dictionary of American Family Names ©2013, Oxford University Press