Born: September 6, 1793, London, England.
Died: August 18, 1867.
William was the son of Lemuel Bartholomew, and husband of composer Ann Sheppard Mounsey (married 1853).
He made his living as a chemist, but is best remembered as a librettist. Starting in 1822, he devoted much of his time to writing lyrics for foreign music. In 1841, he submitted a libretto for a fairy opera, Christmas Night’s Dream, to Felix Mendelssohn. Thus began their long time friendship and collaboration.
He wrote librettos for the premieres of many of Mendelssohn’s works in England, including Antigone (1841), Athalie (1845), Hear My Prayer (1845), Œdipus Coloneus (1845), Praise Jehovah (1846), and the oratorio Elijah for the Birmingham Triennial Music Festival (1846).
He also wrote librettos for Michael Costa’s Eli and Naaman, the oratorio The Nativity, and children’s songs.