I'm no expert on Maggie!
Final Araucaria of the day then. Poet of the jigsaw (5) -E-T-
I have KEATS but to say I have no idea why would be an understatement!
If this is one of Araucaria’s alphabetical jigsaw puzzles, then “of the jigsaw” might be a contextual reference. Is there a theme perhaps? Other than that I can’t think of a Keats connection
Impossible without seeing the whole puzzle, but if it’s one of those “answers must be entered wherever they will fit” Guardian puzzles, could there be something thematic which is not in the clue itself?