Johannesburg, South Africa: Nelson Mandela s widow Graca Machel has broken the customary mourning period to call ... Machel was Mandela s third wife, and he was her second presidential husband.

Makgatho Mandela was the only surviving son of Mandela's first wife, Evelyn. Mandela's other son, Madiba Thembekile, was killed in a car crash in 1969.