* A nickname: A shortened form of a longer name like "Voltaire" or "Vogel".
* A place name: Could be derived from a place called "Vo" (there are several towns and villages with this name in Europe).
* A professional name: It could indicate a profession, for example, "Vo" might have been a common name for someone who worked with "vo" (the word for "voice" in some languages).
* A random combination of letters: In some cases, surnames might be random combinations of letters, particularly when they've been adopted or changed over time.
To know the origin of a specific "VO" surname, you would need additional information about the person or family.
Here are some ways to research the origin of a specific "VO" surname:
* Family history research: Look for family trees, genealogy records, or historical documents that mention the surname.
* Geographical location: Consider where the family originated from, as this can help narrow down the possibilities.
* Linguistic analysis: The surname's spelling and pronunciation might provide clues to its origin.
* Online resources: Explore online genealogy databases and surname dictionaries.
Remember that without more context, it's impossible to definitively say where the surname "VO" comes from.