Claim: William Grebe won a Silver medal in men's saber in the 1904 Olympics, as well as the U.S. national championship in dueling sword.
Evidence: William F. Grebe (March 9, 1869 – June 29, 1960) was an American fencer who competed in the 1904 Summer Olympics. In 1904 he won the silver medal in individual sabre competition and a bronze medal in singlestick competition. In 1906 he won the U.S. national championship in dueling sword (now known as épée).