Clement earl (6)
I believe the answer is:
attlee
This clue might be a double definition.
'clement' is the first definition.
(prime minister Clement Attlee)
'earl' is the second definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I don't see?
Can you help me to learn more?
(Other definitions for attlee that I've seen before include "Former British PM" , "Granny Smiths perhaps" , "British premier" , "Post-war British PM, Clement . . . . . ." , "British PM, 1945-51" .)