Sir Alexander Fleming, from Wikipedia:
Sir Alexander Fleming (6 August 1881 – 11 March 1955) was a Scottish biologist and pharmacologist. Fleming published many articles on bacteriology, immunology and chemotherapy. His best-known achievements are the discovery of the enzyme lysozyme in 1923 and the antibiotic substance penicillin from the fungus Penicillium notatum in 1928, for which he shared the Nobel Prize in Physiology or Medicine in 1945 with Howard Walter Florey and Ernst Boris Chain.
Not to be mistaken with Sir Sandford Fleming:
Sir Sandford Fleming (January 7, 1827 – July 22, 1915) was a Scottish-born Canadian engineer and inventor, known for proposing worldwide standard time zones,[1] Canada’s postage stamp, a huge body of surveying and map making, engineering much of the Intercolonial Railway and the Canadian Pacific Railway, and being a founding member of the Royal Society of Canada and founder of the Royal Canadian Institute, a science organization in Toronto.
Both of them have many schools named after them, but only one of them has a playground behind that school with sticky fig juice on the chains of the swing set.