Revolutionary's charter in part of England (8)
I believe the answer is:
cheshire
'part of england' is the definition.
(English county)
'revolutionary's charter' is the wordplay.
'revolutionary's' becomes 'ches' (Che Guevara the Marxist revolutionary).
'charter' becomes 'hire' (synonyms).
'ches'+'hire'='CHESHIRE'
'in' acts as a link.
(Other definitions for cheshire that I've seen before include "Crumbly cheese from English county" , "division in England" , "Cat with broad smile, from English county" , "part of England" , "Type of English cheese" .)