Mandela leads tributes to Adelaide Tambo  The former South
African president Nelson Mandela today paid tribute to his
friend and fellow anti-apartheid campaigner Adelaide Tambo, who
died yesterday.  Ms Tambo, the widow of the African National
Congress hero Oliver Tambo, died at her home in Johannesburg, an
ANC statement said. She was 77.  Like her husband, Ms Tambo -
who was affectionately known as Ma Tambo or Mama Adelaide - was
a lifelong political activist.  Mr Mandela, who shared her
birthday, said he mourned the "passing away of a close personal
friend, a comrade and one of the great heroines of our nation".
"She was a mother to the liberation movement in exile, and a
nationally revered figure in our new nation," he said in a
statement released by the Nelson Mandela Foundation. "We pay
tribute to a life dedicated to freedom and service."  The
foundation said Mr Mandela was in Mozambique but would return to
Johannesburg to offer his condolences and support to the Tambo
family.  As family and friends gath