Not really expect to describe Bob's family quarrel? (4,7,4)
I believe the answer is:
hope against hope
'not really expect' is the definition.
(to hope against hope is to cling to a faint hope)
'describe bob's family quarrel?' is the wordplay.
I cannot really see how this works, but
'family' could be 'pea' (pea family is a kind of family) and 'pea' is found within the answer.
'bob' could be 's' (abbreviation for shilling - 'bob' before 1971) and 's' is found within the answer.
This explanation may well be incorrect...
'to' is the link.
(Other definitions for hope against hope that I've seen before include "family quarrel over Zenda royalties?" , "Not really expect" , "Look for unlikely outcome" , "Cling to mere possibility" .)