To figure out someone's nationality with the surname "Gunderson", you would need more information, such as:
* Their first name: This might provide clues about their origin.
* Where they live: This would be a strong indicator of their current nationality.
* Their background information: This could reveal details about their family history and origins.
The surname "Gunderson" is of Scandinavian origin, most likely from Denmark, Norway, or Sweden. However, it's important to remember that surnames can be passed down through generations, so someone with the surname "Gunderson" may not necessarily be from Scandinavia.