William was born on June 28th, 1814 in Chatteris Cambridge and his baptism took place there on January 15th, 1815. William's father was Thomas Lemon and his mother was Sarah Palmer. His paternal grandparents were Thomas Lemon and Elizabeth Sewell. He had a brother named Thomas. He was the younger of the two children. He died at the age of 73 on March 8th, 1888 in London, England.