He's magnanimous, but notable for getting no thanks (5)
I believe the answer is:
noble
'he's' is the definition.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for noble that I've seen before include "Illustrious, peer" , "Grand, magnanimous" , "Honourable or of high rank" , "like Basie or Ellington?" , "Former gold coin" .)