Old Norse. It's Norwegian.
'Onsager' is not an Irish word; it is a Norwegian surname.
It is Norwegian
Norwegian.
The surname Breen is of Irish origin.
The surname Jacobsen is Dutch, Danish, North German, and Norwegian, meaning son or relative of Jacob.
"Krogstad" is a Norwegian surname derived from "krogen," meaning hook or nook, and "stad," meaning place or town. It is a common Scandinavian surname that often has maritime or geographical connotations.
The proud and noble Dutch surname of Lier is first found in Holland.
The royal family comes from the danish royal family, the Schleswig-Holstein-Glücksburg-Sonderburg. Though, if any surname is to be used for the Norwegian royal family, it is "Rex".
The name "Bjugstad" is of Scandinavian origin, specifically Norwegian. It is a surname commonly found in Norway.
Braafladt is an old Norwegian last name.
Yes, a quite common Norwegian surname that means "son of gold fire" is "Guldbrandsen". Carrying the meaning of "from fire", the Afrikaans surname (of Dutch origin) "Van Vuuren" may be what you seek.