Scotland vs Norway 1978/1979

[Gabe]

Please, I need your help to understand the correct name of the Norway player Arne Larsen Okland who faced Scotland on 25th October 1978 and on 7th June 1979.

On the websites I find him as

ARNE LARSEN OKLAND and also as

ARNE OKLAND

My doubt is about "Larsen". Is it a second given name or is it a part of the surname, so Larsen-Okland ?

Thank you so much

[tribalcolours]

https://en.wikipedia.org/wiki/Arne_Larsen_%C3%98kland