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JohnGray was Keeper of Zoology at the British Museum in London from 1840 until Christmas 1874.
Gray was born in Walsall, the son of Samuel Frederick Gray (1766-1828), a well known pharmacologist and botanist of his time.
Gray was also interested in postage stamps; on 1 May 1840, the day the Penny Black first went on sale, he purchased several with the intent to save them, thus making him the world's first known stamp collector.