- Dictionary of National Biography, 1912 supplement/Roberts, Isaac (en.wikisource.org)
ROBERTS, ISAAC (1829–1904), amateur astronomer, son of William Roberts, a farmer of Groes, near Denbigh, North Wales, was born at that place on 27 Jan. 1829; though in childhood he left Wales with his family for Liverpool, he retained a knowledge of Welsh through life. In 1844 he was apprenticed for seven years to the firm of John Johnson & Son, afterwards Johnson & Robinson, builders and lime burners, of Liverpool. One of the partners, Robinson, died in 1855, and Roberts was made manager…
- Isaac Roberts (Wikipedia)
Isaac Roberts FRS (27 January 1829 – 17 July 1904) was a Welsh engineer and businessman best known for his work as an amateur astronomer, pioneering the field of astrophotography of nebulae. He was a member of the Liverpool Astronomical Society in England and was a fellow of the Royal Geological Society. Roberts was also awarded the Gold Medal of the Royal Astronomical Society in 1895.