her own trusty squire > [Glauce, Britomart's nurse: see 303.61]
4 Neither of them she found where she them lore:
lore > forsook, left (catachr.)
5 Thereat her noble heart was stonished sore;
Thereat > As a result of that; thereupon stonished > stunned
6 But most fair Amoret, whose gentle spirit
gentle > noble; gentle
7 Now began to feed on hope, which she before 8 Conceived had, to see her own dear knight, 9 Being thereof beguiled, was fild with new affright.
thereof beguiled > deprived of that; cheated of that fild > filled; defiled (cf. 105.32:2 etc.) affright > terror
312.45