Gave a fellow the wrong date (7)
I believe the answer is:
donated
'gave' is the definition.
(donating is a kind of giving)
'a fellow the wrong date' is the wordplay.
'a fellow' becomes 'don' (I've seen this before).
'the wrong' indicates an anagram.
'date' is an anagram of 'ated'.
'don'+'ated'='DONATED'
(Other definitions for donated that I've seen before include "Given" , "Gave" , "Presented" .)