Hi. You must ask it from the parish. They need a name and date of birth of the person and reason why you need it (genealogy). Then you can get it with official stamp, but it costs some money. Then it is official. But it is correct only if you can define the person correctly. Normally they can send it with a bill, but I don't know if it works for foreigners.
You have my address and I can help you if needed.