[59.] With forced fury, etc., supplying "me" from "my" in l. 58 the meaning is: the wound ... brought ... me following its bidding with compulsive (passionate) fury, etc. In the sixteenth century his was still almost always used as the possessive of it. Its does not occur in the King James Version of the Bible (1611).
[63.] Could ever find (the heart) to grieve, etc. A Euphuistic conceit.
[64.] According to the physiology of Spenser's age, love was supposed to dry up the humors ("moysture") of the body.
[70.] But told, i.e. if it (my love) is told.
[100.] Ensample make of him, witness him (the Redcross knight).
[113.] Whiles every sence, etc., while the sweet moisture bathed all my senses.
[146.] Next to that Ladies love, i.e. next to his love (loyalty) for Gloriana. Does the poet mean that allegiance to queen and country comes before private affection?
[149.] Was firmest fixt, etc., were strongest in my extremity (in the giant's dungeon).
[169.] A booke, the New Testament, an appropriate gift from the champions of the Reformed Church.
[182.] An armed knight, Sir Trevisan, who symbolizes Fear.