This is the signature of Raphael Hanno (1791-1871), a German Christian author.
Hanno was professor of Oriental languages at the University of Heidelberg from 1824 until his death. He focused his writings on the Hebrew language and poetry.
clip from Shaping the Darkness: Donald Finkel and Constance Urdang, Producer and Director: Peter Carlos, Associate Director: Sharon Price, Production/Camera: Marianne Kuzara and Ken Slattery, Mark Gifford, Barry Bruns, Steve West, Jeff Hardcastle