Possible Clues:

• Lincolnshire town — 18th-century English painter
• See 14
• Artist proceeds in the manner of Sketches by Boz, mainly
• Painter wins town in local elections
• Artist makes sacred tree sketch
• Lincolnshire town — 18th century painter
• Artist captures gold in part of tree
• Painter wins over Kensington and Chelsea, say
• Painter does what would-be MP may hope to do
• Arty type wins parliamentary seat, perhaps