Lambert, who was commonly known as "Aunt Ellen" among
party members, died at the age of 78, reported the SABC on Sunday.
She joined the ANC in 1953 and was one of the Freedom Charter
volunteers. At her youthful stage, she worked with ANC leaders including Walter
Sisulu, Ahmed Kathrada and many others.
Lambert operated underground during the banning of the ANC and
was constantly harassed by police, the broadcaster reported.
During the 1980s she worked tirelessly for the formation of the
United Democratic Front, leading major campaigns opposing the apartheid
tri-cameral parliament.
After the unbanning of the ANC, she was among those who
established the first ANC branches in Reiger
Park, Actonville, and Eldorado
Park.
Some of those attendeing the funeral were Gauteng
premier Nomvula Mokonyane, and Lulu Xingwana, the Minister for Women, Children
and People with Disabilities.