"Franz Betz (19 March 1835 – 11 August 1900) was a German bass-baritone opera singer who sang at the Berlin State Opera from 1859 to 1897. He was particularly known for his performances in operas by Richard Wagner and created the role of Hans Sachs in Die Meistersinger von Nürnberg." - (en.wikipedia.org 25.12.2020)