looking for a painting, dont know artist or the title redhead writer in bluecoat?

i'm looking for a painting, the subject is a writer who commited suicide after being rejected by the printing company?. he's a rehead with a blue coat lying on hwat appears to be a window seat, with ,of course, a window behiind him. he holds the jection lettter in his hand, many people think it's a love letter. it most likely is from the 18th century. if you know about this painting please send me its title.