Nguni people

Nguni people are a group of people who primarily speak Nguni languages and currently reside predominantly in Southern Africa. The Nguni people are Xhosa, Zulu, Ndebele and Swazi people. They predominantly live in South Africa. Swazi people live in both South Africa and Swaziland. While Ndebele people live in both South Africa and Zimbabwe. In South Africa, the historic Nguni kingdoms of the Xhosa, Zulu, Ndebele and Swazi lie on the present provinces of the Eastern Cape, KwaZulu-Natal, and Mpumalanga. The most notable of these kingdoms is the Zulu Kingdom which was ruled by Shaka Zulu, a powerful warrior king whose conquest took place in the early nineteenth century.

Most of what is known about ancient Nguni history comes from oral history and legends. Traditionally, they are said to have migrated to Africa's Great Lakes region from the north. Some groups split off and settled along the way, while others kept going. Thus, the following settlement pattern formed: the southern Ndebele in the north, the Swazi in the north east, the Zulu towards the east and the Xhosa in the south. Owing to the fact that these people had a common origin, their languages and cultures show marked similarities.

After diverging from the Sotho-Tswana and Tsonga, the Nguni eventually met with San hunters, which accounts for their use of "click" languages.

Though in today's history, the Nguni Ndebele are known to have come from the Zulus, this is partially untrue. The Ndebeles(Southern-South Africa based) were the first group to separate from the Nguni nation after they had entered the South African borders and they settled in the Transvaal region from around the year 1500. The remaining Nguni nation moved further south, with those who moved south west ended calling themselves Xhosas, and those who moved south east remained calling themselves Ngunis. That was until when Shaka defeated the Ndwandwes, who ran away from south east coming back northwards, that led to the formation of the Swazis, and the formation of the Zulus by the clans who remained. Dinuzulu was Shaka's grandmother, Shaka then named the new nation by the name ZULU. Also, the Khumalo clan, being led by Mzilikazi, that ran away from Shaka, coming towards were the weak Manala Ndebeles were in the present day Pretoria. The weakening of the Manala Ndebeles, was as a result of the separation of the Ndebele nation after almost two to three centuries of their settlement in the Transvaal region. The separation led to the majority of the nation to go with Nzunza and the minority with Manala. The Nzunza Ndebele moved north and the Manala Ndebele, who were predominantly composed of women remained in the present day Pretoria. When Mzilikazi arrived, he then killed the Manala ndebele king, king Silamba, who was ruling, and they settled for a while before moving further north. This established them as a new form of Ndebele(Northern Ndebele). This is also evident from the differences in the north and the southern Ndebele.

...
Wikipedia