Njonjo was the son of Josiah Njonjo, a colonial paramount chief and one of the foremost collaborators of British rule in Kenya. The Njonjo family were close friends of Harry Leakey, whose son and grandson would later play important roles in archaeology and Kenyan politics. He was admitted to King's College Budo, the best school in East Africa in 1939.. After completing his secondary education at Alliance High School in Kikuyu, Njonjo enrolled at Fort Hare University in South Africa, where he graduated with a bachelor's degree in Law. He returned to Kenya and was appointed a legal clerk in the colonial government in 1955, having completed a Law degree at Lincoln's Inn in the United Kingdom. This was at the height of the state of Emergency, which had been declared in order to defeat the attempts of Mau Maufreedom fighters to gain independence. After returning to Kenya Njonjo served in the Colonial government where he built a reputation as a diligent lawyer, and therefore was considered to become Attorney General in the Independent Kenya under President Jomo Kenyatta. In 1976, during a period of tense relations between Kenya and Uganda, Njonjo took part in secret negotiations with Israel that proved instrumental in the success of the Israeli military’s Operation Entebbe. The government of Kenya allowed the Israeli armed forces to use Nairobi airport as a stopover base in the context of the military assault on Entebbe airport that ended a week-long hostage crisis involving Israeli air passengers taken prisoner by a PLFP commando. President Jomo Kenyatta died in 1978, to be succeeded by Moi as Njonjo had anticipated. Charles Njonjo entered into parliament in April 1980 after retiring as attorney general at the age of 60, a post in which he had served for 17 years. He had considered politics for over a decade but hesitated due to lack of a popular base. He was elected MP for Kikuyu unchallenged, after the incumbent MP had resigned his seat the day before Njonjo announced his candidacy. In June 1980 he was selected for a newly created cabinet position by Daniel arap Moi, as minister for home and constitutional affairs, during an expected cabinet reshuffle.
Miller Inquiry
After the attempted coup of 1982, Moi decided to purge his party and cabinet of figures he had established wanted him out of power. Chief among them would be Njonjo, and powerful internal Security minister, G.G. Kariuki. He was dragged through a judicial inquiry, which concluded that he had abused office, and had tried to take over power from Moi. he was forced to resign, effectively destroying his political career. Daniel arap Moi. In the early 1980s he was the chairman of the East African Wildlife Society.
Return to Public Life
In 1998 he returned to public life, and was appointed chairman of the Kenya Wildlife Service. In October 2006 there were indications that Njonjo was attempting a comeback in Kenyan politics, including his show of support for Raila Odinga. Today, Njonjo remains one of the richest people in the country. He has extensive landholding across the country. He also owns interests in high-profile financial institutions, including banks and insurance companies. He turned 100 in January 2020.