Original parish has older collection of poems (1,10,3)
I believe the answer is:
a shropshire lad
'collection of poems' is the definition.
(I've seen this before)
'original parish has older' is the wordplay.
'original' indicates an anagram.
'parish'+'has'+'older'='parishhasolder'
'parishhasolder' with letters rearranged gives 'A SHROPSHIRE LAD'.
(Other definitions for a shropshire lad that I've seen before include "poetry book" , "collection of lines" , "collection of poems" , "A. E. Housman cycle" , "work of poet" .)