She was involved in South African politics for five decades and was married to the late Oliver Tambo, president of the African National Congress (ANC), from 1956 until his death from a stroke in 1993.
It is believed that, contrary to the TRC's full disclosure rule, Williamson did not reveal in his application that the purpose of this bombing was to kill the then ANC president, Oliver Tambo.
He has written books for neo-literate adults, such as The Murder of Mrs. Mohapi (1995), My Cousin Thabo (1995), Take a Chance (1995), My Name is Selina Mabiletsa (1996), and Sergeant Dlamini Falls in Love (1996), biographies of Sol Plaatje and Oliver Tambo for teenagers, and adaptations of works by Bessie Head, Sol Plaatje, and Can Themba.
He was also a member of London University's Anti-Apartheid Society where he invited Oliver Tambo to be its honorary chairman.
With the capital acquired he attempted to open a clothing retailer in Soweto, but was blocked by the government's refusal to grant him a licence – despite the intervention by the law firm created by Oliver Tambo and Nelson Mandela.
Oliver Cromwell | Oliver Stone | Oliver! | Oliver Goldsmith | Oliver | Jamie Oliver | Oliver Wendell Holmes, Jr. | Oliver Sacks | Oliver Wendell Holmes, Sr. | Oliver Twist | Oliver Wendell Holmes | Oliver Hardy | Oliver Reed | Oliver North | Oliver Nelson | Oliver Hazard Perry | Oliver Lake | Oliver Heaviside | Oliver O. Howard | Oliver Tambo | Oliver Lodge | Oliver Letwin | Oliver Kahn | Oliver Knussen | Paul Oliver | Oliver Tompsett | Oliver Pocher | Damien Oliver | Susan Oliver | Oliver Dragojević |
A group of 156 black and white activists - including Chief Albert Lutuli, Oliver Tambo, Nelson Mandela and Walter Sisulu - were put in the dock after a countrywide crackdown following the adoption of the Freedom Charter at the Congress of the People in Kliptown at the end of 1955.
"The Leadership of Oliver Tambo": Panel discussion including Minister Pallo Jordan, Ms. Gertrude Shope and Mr. Joe Mathews, facilitated by Mr. Tim Modise (2004);