When I saw the original portrait of young Augustus Brine, I immediately thought of my character, Stubby, in a Captain and a Rogue.
Imagine the impact of walking into a museum, looking on the wall, and seeing a portrait of a person you'd imagined. Especially after searching the internet trying to find a picture that represented the character and finally settling on a picture that was close but not what you'd really imagined.
Stubby wouldn't have had such a sharp jacket, and his clothes would have been more tattered—but I am still in awe of the portrait.
The painting of Augustus by John Singleton Copley is from 1782, about 40 years before my novel's time frame.
(If you do an internet search on Augustus Brine in the images section, you'll be able to see lots of photos of Copley's painting.)