Scandinavian chap in Arroyo La Fuente (4)

I believe the answer is:

olaf

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'scandinavian chap' is the definition.
The definition suggests a singular noun which matches the answer.

'in arroyo la fuente' is the wordplay.
'in' indicates the answer is hidden within the clue.
'OLAF' can be found hidden inside 'arroyo la fuente'.

Can you help me to learn more?

(Other definitions for olaf that I've seen before include "King and patron saint of Norway" , "King --, cantata by Elgar" , "Name of five Norwegian kings" , "Name of five kings of Norway" , "Man's name; foal (anag.)" .)

I've seen this clue in The Sun.

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