A German saint, a German scientist (8)

I believe the answer is:

einstein

'scientist' is the definition.
(Einstein is an example)

'a german saint a german' is the wordplay.
'a german' becomes 'ein' ('a' in German).
'saint' becomes 'st'.
'a german' becomes 'ein' ('a' in German).
'ein'+'st'+'ein'='EINSTEIN'

(Other definitions for einstein that I've seen before include "Mathematical genius of nineties" , "renowned scientist" , "Physicist who formulated theories of relativity" , "Scientific genius" , "Highly influential German physicist" .)

I've seen this clue in The Telegraph.

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