Nobleman given attention by lake (4)
I believe the answer is:
earl
'nobleman' is the definition.
(I know that earl is a type of peer)
'attention by lake' is the wordplay.
'attention' becomes 'ear' (having someone's ear is having their attention).
'by' is a charade indicator (letters next to each other).
'lake' becomes 'L' (geographical abbreviation).
'ear'+'l'='EARL'
'given' is the link.
(Other definitions for earl that I've seen before include "Countesss husband" , "Male equivalent of a countess" , "Real (anag) - nobleman" , "Jimmy Carter's middle name" , "Aristocrat ranking between marquis and viscount" .)