The name Kimani originates from the Kikuyu language, spoken by the Kikuyu people of Kenya. It is derived from the word "kiama," which means "warrior" or "brave one." The name is believed to have been in use since ancient times, reflecting the strong warrior traditions of the Kikuyu tribe.

In the early 19th century, the name Kimani appeared in written records kept by Christian missionaries who were among the first to document the Kikuyu language and culture. These records provide some of the earliest written accounts of the name's usage.

One of the earliest known individuals to bear the name Kimani was a Kikuyu chief who lived in the late 18th century. While his exact birth and death dates are unknown, he was renowned for his leadership and bravery during conflicts with neighboring tribes.

In the 20th century, several notable individuals with the name Kimani achieved prominence. Kimani Nganga Maruge (1920-2009) was a Kenyan politician and activist who played a significant role in the country's independence movement. He served as a member of the Legislative Council and was later appointed as an assistant minister in the post-independence government.

Another prominent figure was Kimani Gecau (1937-2008), a Kenyan politician and diplomat. He served as a member of parliament and held various cabinet positions, including Minister of Foreign Affairs and Minister of Education. Gecau was also Kenya's ambassador to the United Nations from 1978 to 1988.

In the field of literature, Kimani Njogu (born 1945) is a renowned Kenyan author and scholar. He has written several books on African literature, culture, and politics, and has been a professor at various universities in Kenya and abroad.

Kimani Ng'ang'a Maruge (1923-2015) was a Kenyan freedom fighter and politician. He played a crucial role in the Mau Mau uprising against British colonial rule and was later elected to the National Assembly, serving as a member of parliament for several terms.

These are just a few examples of prominent individuals throughout history who have borne the name Kimani, reflecting its deep roots in Kenyan culture and its association with bravery, leadership, and a strong sense of identity.