19 down
Arthur
dramatically
married
(no
better
afterwards)
(6)
Arthur dramatically married (no better afterwards) (6)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
Arthur dramatically is your definition, pointing you towards the famous American playwright. Take M (the abbreviation for "married"), add ILL ("no better"), then stick ER on the end ("afterwards") and you've got your man.