Unclued lights are nine words taken from a poem whose first three words (as quoted in ODQ) will appear in the completed grid. The poet’s surname is a clued light and must be shaded. Surplus words in six clues are more words from the poem.

Across

7 Monkey making glaring mistake (6)

11 Young hawks when in round holes (6)

12 Virgil’s epic time with aged Enid romping (6)

14 Piece of tongue Tybalt cooked bastard refused (5)

15 Chiel relaxed about university (5)

16 House spademan rebuilt MP neglected (6)

17 Down payment for...