Public article to appear before Charles's passing (10)
I believe the answer is:
overtaking
'passing' is the definition.
(I know that passing can be written as overtaking)
'public article to appear before charles's' is the wordplay.
I cannot really understand how this works, but
'public' could be 'overt' (both can mean well-known or unconcealed) and 'overt' is present in the answer.
'article' could be 'a' (the indefinite article in English) and 'a' is present in the answer.
'charles' could be 'king' (Charles I or Charles II) and 'king' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for overtaking that I've seen is " Passing".)