Family, first to last, with courage that supplies writer with material (9)

'family first to last' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'courage that supplies writer with material' is the wordplay.
I cannot quite understand how this works, but
'courage' could be 'bottle' (bottle can mean courage) and 'bottle' is found within the answer.
'writer' could be 'i' (the person who is writing these clues) and 'i' is found in the answer.
This explanation may well be incorrect...

'with' is the link.

Can you help me to learn more?