Crossword Genius

An Irish saint and a first-class fellow (5)

Ross

I believe the answer is:

aidan

'an irish saint' is the definition.
(I've seen this in another clue)

'a first-class fellow' is the wordplay.
'a first class' becomes 'ai' (A1 - top quality).
'fellow' becomes 'dan' (man's name).
'ai'+'dan'='AIDAN'

'and' acts as a link.

(Other definitions for aidan that I've seen before include "Saint associated with Lindisfarne" , "Irish fellow" .)

I've seen this clue in the Evening Standard.
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