Don's role playing Medieval Scandinavian (3,5)

I believe the answer is:

old norse

'medieval scandinavian' is the definition.
(I've seen this before)

'don's role playing' is the wordplay.
'playing' is an anagram indicator.
'dons'+'role'='donsrole'
'donsrole' is an anagram of 'OLD NORSE'.

(Other definitions for old norse that I've seen before include "Medieval Scandinavian language" , "Extinct Germanic language" , "Ancient Scandinavian language" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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