George A. von Ihering, 80, who taught German at Georgetown University from 1958 to 1970, died of cancer Friday at Georgetown University Hospital. He was a resident of Bethesda.

Mr. von Ihering joined the faculty of Georgetown's School of Foreign Service as an instructor in 1958. Four years later, he became assistant professor of German in the Schools of Foreign Service and Language and Linguistics. He continued in this post until his retirement.

He was a cofounder of the Georgetown University String Quartet and had been a moderator of the Georgetown University Chamber Orchestra and the Collegium Musicum.

Mr. von Ihering was a native of Berlin, Germany, and studied at the universities of Berlin and Wurzburg. He was awarded a master's degree in chemistry in 1923. He also was a cellist and earned a diploma from the State Academy of Music in Berlin in 1927.

During the 1930s, he was a translator and journalist and wrote novels and children's books. He was a translator for the German government during World War II. He was press manager for the U.S. Film Distribution Agency in Munich before moving here in 1957.

Survivors include his wife, the former Charlotte Geiger, of Bethesda.