The Elegant Reader, by Georg Friedrich Kersting (1785-1847), who painted a whole series of these interior scenes between about 1810 and 1830. These are some of my favourite German paintings from the period, I like the feeling of withdrawal and concentration. And the austerity.
Caspar David Friedrich at work on one his visionary landscapes in 1812.
I like the convolvulus wound around the picture-frame; of course it will wither within the day.