McKellen or McShane? (3)
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I believe the answer is:
ian
'mckellen or mcshane?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ian that I've seen before include "The familar Dr Paisley" , "Boy's name (Scottish?)" , "Scottish man's name" , "Scottish John" , "Albert Beale's first name in EastEnders" .)