Description : Nelson Mandela, former president of South Africa and Nobel Peace Prize Laureate with his wife Gra?a Michel, on stage during the Seventh Annual Nelson Mandela Lecture delivered by Nobel Peace Prize Laureate Bangladeshi banker and founder of Grameen Bank Professor Muhammad Yunus. Also known as Madiba in his homeland, Nelson Mandela is will turn 91 on 8 this year. Johannesburg, South Africa.