Gideon Algernon Mantell (February 3, 1790 - November 10 1852) was an English obstetrician, geologist and palaeontologist. He is credited with discovering the first fossils identified as originating from a dinosaur, which were teeth belonging to an "Iguanodon". Wikipedia
The definitive Wikipedia entry for Gideon Mantell. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Gideon_Mantell
Legend has it that while the country doctor Gideon Mantell was visiting a patient, his wife Mary Ann took a short stroll as she waited for him, and when Mantell finished his house call, she presented him with a puzzling tooth. www.strangescience.net/mantell.htm
Born to a shoemaker in Lewes, East Sussex, Mantell went into the medical career. He was apprenticed in 1805, and was later awarded his Diploma as a Member of the Royal College of Surgeons (MRCS). palaeo.gly.bris.ac.uk/Palaeofiles/History/mantell.xhtml