Charles Edward must accept one's punished (9)
I believe the answer is:
chastised
'punished' is the definition.
('chastised' can be similar in meaning to 'punished')
'charles edward must accept one's' is the wordplay.
'charles' becomes 'chas' (shortened form).
'edward' becomes 'ted'.
'must accept' means one lot of letters goes inside another.
'one's' becomes 'is' (Roman numeral).
'ted' placed around 'is' is 'tised'.
'chas'+'tised'='CHASTISED'
(Other definitions for chastised that I've seen before include "Rebuked" , "beaten" , "Sad ethics (anag.)" , "Severely reprimanded" .)