SonntagWilliamLouis Twilight We

About author:

William Sonntag began his artistic career in 1842 in Cincinnati. He worked there until 1853 when he first visited Europe, staying mainly in Florence. He returned to the United States for a brief two years, establishing himself as an artist in New York City before recommencing study in Florence.

Reference
http://whitemountainart.com/Biographies/bio_wls.htm