Good painter works hard over place with famous address (10)
I believe the answer is:
gettysburg
'place with famous address' is the definition.
(site of Abraham Lincoln's Gettysburg address)
'good painter works hard over' is the wordplay.
'good' becomes 'g' (abbreviation).
'painter' becomes 'Etty' (William Etty, 1787-1849).
'works hard' becomes 'grubs' (grub can mean to work hard).
'over' says the letters should be written backwards.
'grubs' backwards is 'sburg'.
'g'+'etty'+'sburg'='GETTYSBURG'
(Other definitions for gettysburg that I've seen before include "Pennsylvania location" , "Scene of Lincoln's address" , "Site of Lincoln's address" .)