Lydia Yeamans Titus (12 December 1857 – 30 December 1929) was an Australian-born American singer, dancer, comedienne, and actress who had a lengthy career in vaudeville and cinema. She was remembered on stage for her Baby-Talk act and a popular rendition of the English ballad, Sally in Our Alley. In appreciation, King Edward VII once presented Titus a gold bar pin with the opening notes of Sally in Our Alley etched in diamonds. In later life Titus became a pioneer in the medium of film appearing in at least 132 motion pictures between 1911 and 1930. ()