Which then 80-year old statesman married Graça Machel in 1998?

Explanation

Nelson Rolihlahla Mandela (born 18 July 1918) is a former South African president and was one of the country's foremost anti-apartheid activists. On his 80th birthday he married Graça Machel, widow after Samora Machel, the former president of Mozambique and an ally of the ANC party. He had died in a plane crash 15 years earlier.