About Walter Sisulu
Walter Max Ulyate Sisulu was a South African anti-apartheid activist and member of the African National Congress (ANC). Between terms as ANC Secretary-General (1949–1954) and ANC Deputy President (1991–1994), he was Accused No.2 in the Rivonia Trial and was incarcerated on Robben Island where he served more than 25 years' imprisonment for his anti-Apartheid revolutionary activism. He had a close partnership with Oliver Tambo and Nelson Mandela, with whom he played a key role in organising the 1952 Defiance Campaign and the establishment of the ANC Youth League and Umkhonto we Sizwe. He was also on the Central Committee of the South African Communist Party. Sisulu was one of the first ANC leaders to push for a non-racial alliance, leading to cooperation with white and Indian activists like Joe Slovo and Ahmed Kathrada. In 1940, Sisulu joined the African National Congress (ANC), which had been founded in the year of his birth. Sisulu encouraged Mandela to join the ANC, occasionally contributed to his law school tuition, and introduced him to his first wife, Evelyn Mase, who was Sisulu's maternal relative. In 1943, together with Mandela and Oliver Tambo, he joined the ANC Youth League, founded by Anton Lembede, of which Sisulu was initially the treasurer.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.