When you hear a Scandinavian last name, you might wonder where it came from. Well, long ago, there were people in these countries who didn't have last names like we do today. Instead, they just had one name that told others who their father was.
For example, if your dad's name was Erik, then your name would be "Erik's son" or "Eriksson" in Sweden or "Eriksen" in Norway. In Denmark and Iceland, they added "sen" or "dottir" to their parent's name. If your dad's name was Lars, your last name would be "Larsen" or "Larsdottir."
Over time, people started adding other things to their last names, like where they were born, what they did for work, or even personal traits. For instance, if your family came from a town called "Helsingborg," then you might add "-berg" to your last name, like "Larssen-Helsingborg." Or if your family worked in farming, you might add "gaard" or "gård" which means farm in Danish, like "Olsen-Gaard."
If you're Scandinavian, your last name might have a lot of meaning behind it, and it is a way for people to know a bit about you and your family history.