Peter Medawar
Sir Peter Brian Medawar OM CBE FRS was a British biologist born in Brazil, whose work on graft rejection and the discovery of acquired immune tolerance was fundamental to the practice of tissue and organ transplants. For his works in immunology he is regarded as the father of transplantation. He is remembered for his wit in real life and popular writings. Famous zoologists such as Richard Dawkins, referred to him as the wittiest of all scientific writers, and Stephen Jay Gould, as the cleverest man I have ever known.
Medawar was born onFebruary 1915, in Petrpolis in Brazil where his parents where taking residence. He was the second child of Lebanese Nicholas Agnatius Medawar, born in the village of Jounieh, north of Beirut, Lebanon and British mother . His father, a Christian Maronite, became a naturalised British citizen and worked as an agent for a British dental supplies manufacturer which sent him to Brazil as an agent. His status as a British citizen was acquired at birth, as he said My birth was registered at the British Consulate in good time to acquire the status of naturalborn British subject. Medawar left Brazil with his family for England towards the end of the war, and he lived there for the rest of his life. Peter was also a Brazilian citizen by Brazilian nationality law , but renounced his citizenship by refusing military conscription required of Brazilian men.
Source: Wikipedia