Dec. 23 (UPI) -- Those born on this date are under the sign of Capricorn. They include: Advertisement -- John Jay, first chief justice of the U.S. Supreme Court, in 1745 -- Egyptologist Jean Francois Champollion, who deciphered the Rosetta Stone, in 1790 -- Mormon church founder Joseph Smith in 1805 -- Entrepreneur/philanthropist Madam C.J. Walker in 1867 -- Former Japanese Emperor Akihito in 1933 (age 91) File Photo by Keizo Mori/UPI -- Football Hall of Fame member Paul Hornung in 1935 --