Gallery: Mandela and family

The wedding of Walter and Albertina Sisulu in 1944. Nelson Mandela is on the left. The bridesmaid next to him is Evelyn Mase, who would later become his first wife.

Nelson Mandela with his elder son Thembi, who died in an accident at the age of 25.

Undated file photograph of Nelson Mandela and his then wife Winnie. Photo: Reuters

Nelson and Winnie Mandela show off their firstborn daughter, Zindzi, at their home in Orlando West, Soweto, in 1961. Photo: Alf Khumalo/The Star

Zinzi Mandela and her father Nelson Mandela on her wedding day in Soweto in 1992. Photo: AFP

Nelson Mandela blows the candles during his 90th birthday celebrations at his house in Qunu in 2008. Photo: AFP

Former president Nelson Mandela jokes with youngsters as they celebrate his 89th birthday at the Nelson Mandela Children's Fund in Johannesburg in 2007. Photo: AFP

Nelson Mandela celebrates his 94th birthday with great grandchild Zesilo Hlongwane at his home in Qunu in 2012. Photo: AP

From left, Winnie Madikizela-Mandela, and daughters Zinzi and Zoleka Mandela attends the funeral of Zenani Mandela in Johannesburg, South Africa on Thursday, June 17, 2010. Thirteen-year-old Zenani Mandela, the great granddaughter of former South African President Nelson Mandela and Winnie Madikizela-Mandela, was killed in a car crash last week following the World Cup's opening concert. A somber and frail Nelson Mandela attended the funeral, whose public appearances are increasingly rare. Police say a close family friend who was driving the car that crashed on a highway the night of June 10 could be charged with drunk driving and homicide. (AP Photo/Alexander Joe, Pool)

Nelson Mandela is assisted by his wife Graca Machel as he attends the burial of his son Makgatho Lewanika Mandela at the family cemetery in Qunu, Easterrn Cape, in 2005. Photo: AP

This 2011 file photo shows former president Nelson Mandela and his wife Graca Machel after they cast an early ballot in the local elections. Photo: AP

Nelson Mandela celebrates his 93rd birthday with family members at his home in Qunu in this handout released by the Mandela family in 2011. Photo: Reuters