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George Robert Gray was an English zoologist and author, and head of the ornithological section of the British Museum (Natural History) for 41 years. He was the younger brother of the zoologist John Edward Gray and the son of the botanist Samuel Frederick Gray. George Gray's most important publication was his Genera of Brids (1844-49), illustrated by David William Mitchell and Joseph Wolf, which included 46,000 references
Thomas de Grey, 6th Baron Walsingham, was an English politician and amateur entomologist. He was a keen lepidopterist, collecting butterflies and moths from a young age, and was particularly interested in Microlepidoptera. After his purchase of the Zeller, Hofmann and Christoph collections, his collection contained over 260,000 specimens. He donated it to the Natural History Museum, along with his library of 2,600 books. He was elected a fellow of the Royal Society in 1887, and was a member of the Entomological Society of London, serving as President on two occasions
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Secretary of the Lord's Day Observance Society
Arthur Grote was an English colonial administrator. He entered the Bengal Civil Service in 1834, where as a civil servant he was employed in Bengal from 1834 to 1868 and was commissioner and member of the Board of Revenue, Calcutta, 1861-8. He also served as President of the Asiatic Society of Bengal, 1859-62 and 1865, and President of the Royal Agricultural Society of India. On his return to England in 1868 he became a prominent member of the Linnean Society of London and Royal Asiatic Society, and wrote many papers on natural history subjects