Born in Canfield, Illinois, Ertz began his artistic career as an engraver in Chicago. He lived for a short time in Louisiana before going to France as a student in 1892. Ertz spent most of his life as an expatriate in France and in England, where he became a member of the Royal Academy. He was an esteemed teacher, first as a Professor of Watercolor at the Delecluse Academy in Paris and then at Kings Langley, Hertfordshire, England.
European Village, oil on canvas, s.l.l. 30"x 38" with frame
Studied with Benjamin Jean-Joseph Constant and Jules Lefebvre.
Exhibited at the Art Institute of Chicago, the Pennsylvania Academy, the 1893 Columbian Exhibition, the 1904 St. Louis Exhibition, the 1915 Panama Pacific Exhibition, and the Paris salons.
In the collection of the John H. Vanderpoel Art Association, the Nelson-Atkins Museum of Art (Kansas City), the Cleveland Museum, and various British museums.
Ertz died in Pulborough, England in 1954.