Silbannacus was an obscure Roman emperor or usurper during the Crisis of the Third Century. Silbannacus is not mentioned in any surviving contemporary documents and his existence was forgotten until the 20th century, when two coins bearing his name were discovered, the first in the 1930s and the second in the 1980s. His unusual name suggests that he might have been of Gallic descent. Born: January 1, 200 Died: January 1, 300 In office: 248 – January 1, 248 Wiki link