Hi again cocobunny, I've just checked ODQ and the relevant verse is indexed under both 3rd words I mentioned earlier with fewer options from the one that appears in 1a.
Hi again cocobunny, without resorting to giving hints about the poet or poem (which I'll happily do) I'm not sure what other hints I can give about the grid/puzzle without knowing exactly what you already have. Perhaps if you detail what you already have for the 4 across unclueds and the 3rd word in 44a I can hint further without being too obvious.