left side of puzzle is really a puzzle.Travelling miles with spirit in Spenser's work asking one to make haste(6,2,2,5)W*****/I*/I*/**I** An anagram of miles with spirit?
Most of a famous abbey-,or has been created by..........2,4,2 **/***N/*O
And the other side with one small exception came out beautifully.
Sounds very plausible to me. The first letter of the last word in the other one is a P. The S in your answer adds some weight to the possibility of an anagram being the solution but I cannot even begin to see it