Deluded > Frustrated gan > did

7 And sad Proserpine's wrath, them to affright.

sad > dismal, dark; sad Proserpine > (Daughter of Ceres and Jupiter. Carried off by Pluto to be his consort in the underworld; the queen of hell) affright > frighten

8 But when he saw his threatening was but vain, 9 He cast about, and searched his baleful books again.

102.3

Eftsoones he tooke that miscreated faire,
2 And that false other Spright, on whom he spred
A seeming body of the subtile aire,
4 Like a young Squire, in loues and +lusty-hed+
His wanton dayes that euer loosely led,
6 Without regard of armes and dreaded fight:
Those two he tooke, and in a secret bed,
8 Couered with darknesse and misdeeming night,
Them both together laid, to ioy in vaine delight.

4 lusty-hed > lusty-hed. 1596

1 Eftsoons he took that miscreated fair,

Eftsoons > Soon afterwards that miscreated fair > [the sprite resembling Una; miscreated = evilly or falsely created]

2 And that false other sprite, on whom he spread 3 A seeming body of the subtile air,