Edward Frankland
Sir Edward Frankland, KCB, FRS was a British chemist. He was an expert in water quality and analysis, and originated the concept of combining power, or valence, in chemistry. He was also one of the originators of organometallic chemistry.
Edward Frankland was born in Catterall, Lancashire and baptised at Churchtown, Lancashire onFebruary 1825. As his baptismal record shows, his birth was illegitimate. His mother, Margaret Peggy Frankland, later married William Helm, a Lancaster cabinetmaker. His illegitimacy cast a shadow over all his life since he was pledged to silence as to the identity of his natural father, though a handsome annuity was paid to his mother.
Source: Wikipedia