Unless you are Icelandic. I knew a married couple with children years ago. I don’t recall exactly, but the husband was Lars and the wife was Frea. Their last name was Thorson.
Their young boy was named Thor (after Grandpa) but his last name was Larson (son of Lars). The daughter’s last name was Freadotter (daughter of Frea).
My last name is a place name from Norway. It is an odd one, and anyone with it is from the four brothers that lived on that farm.
As opposed to the Norwegian last name of “Nes”, which means point of land on a Fjord. Lots of those around.
Pretty sure that everybody in Iceland is likely related to everybody else in Iceland where the population is currently 393,600. If you are marrying somebody from Iceland and you're from Iceland... Say hello to your cousin before you kiss them.