Attention given to Liberal peer (4)
I believe the answer is:
Here is my best explanation:
'peer' is the definition.
(earl is a kind of peer)
'attention given to liberal' is the wordplay.
'attention' becomes 'ear' (ear is a kind of attention).
'given to' is a charade indicator (letters next to each other).
'liberal' becomes 'l' (abbreviation).
(Other definitions for earl that I've seen before include "Rank immediately above viscount", "House member", "The ___ of Sandwich", "A real peer", "Count", "Noble title", "Real (anag) - nobleman", "Title", "Jimmy Carter's middle name" and "Countess his wife".)