Freed about the middle of March and not brought before the court (7)
I believe the answer is:
untried
'not brought before the court' is the definition.
I can't judge whether this definition defines the answer.
'freed about the middle of march' is the wordplay.
'freed' becomes 'untied' (I've seen this in another clue).
'about' means one lot of letters goes inside another.
'the middle of march' becomes 'r' (I can't explain this - if you can you should believe this answer much more).
'untied' enclosing 'r' is 'UNTRIED'.
'and' is the link.
Can you help me to learn more?
(Other definitions for untried that I've seen before include "Not yet experienced" , "Experimental" , "Not given proper hearing in court" , "novel" , "Intrude, being not yet tested" .)