Aug. 4 (UPI) -- Those born on this date are under the sign of Leo. They include: -- Pope Urban VII in 1521 -- Poet Percy Bysshe Shelley in 1792 -- Fashion designer Louis Vuitton in 1821 -- Queen Elizabeth, mother of Britain's Queen Elizabeth II, in 1900 -- Musician Louis Armstrong in 1901 UPI File Photo -- Journalist Helen Thomas in 1920 -- Actor Richard Belzer in 1944 -- Football Hall of Fame member John Riggins in 1949 (age 76) -- Writer Sapphire in 1950 (age 75) -- Actor Billy Bob Thornton