Most collections of music by Turlough O'Carolan show a picture of him holding a small harp to his chest and one hand brushing along the strings--a similar posture to what some autoharp players adopt.
It is not shaped like what I think of as a Celtic Harp. Does anyone know what kind it would be? What kind of material the strings are made of? Is it diatonic? (It looks to simple to have levers or any mechanism to change the key.)
They don't shown enough of him to tell. Would he be standing, or is he sitting with the instrument on his lap?