Father of a cowboy? (6)
I believe the answer is:
'cowboy?' is the definition.
('cowman' can be a synonym of 'cowboy')
'father of a' is the wordplay.
I cannot quite see how this works, but
'of' could be 'o' and 'o' is present in the answer.
'a' could be 'an' and 'an' is found within the answer.
The remaining letters 'cwm' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for cowman that I've seen before include "Stocky chap" , "Tender of cattle" .)