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Worldwide, เพ็ญบุญ (เพ็ญบุญ , Penboon , Penbun ) is a very rare girly first name. The given name เพ็ญบุญ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare girly name. More frequently, เพ็ญบุญ is the last name as well as the forename.