The Bemba belong to a large group of Bantu peoples mainly in the Northern, Luapula, Muchinga, the Northern part of Central Province. The Bantu also belong to the Copperbelt Provinces of Zambia who trace their origins to the Luba and Lunda states of the upper Congo basin called Kola, in what became Katanga Province in southern Democratic Republic of the Congo. The Bemba entered modern-day Zambia through crossing the Luapula River at Chipya in the Senior Chief Matanda's Chiefdom in Mansa _Luapula Province and that Chief Matanda (Mwata Matanda) and his Ushi people were the first to come into Zambia by the year 1328 from Kola. The collection of ethnicities known as Bemba have a ruling class called Abena Ng'andu. This clan traces its ancestry to Mbemba Nshinga (aka Nzinga) who ruled Kongo from 1509-1543. Mbemba was called King Afonso l by the Portuguese whom he hosted in his kingdom for many years. They are one of the larger ethnic groups in Zambia. (A few other ethnic groups in the Northern, Luapula, and Copperbelt provinces of Zambia speak languages that are similar to Bemba but are not necessarily the same. For example, although the Lamba have the same roots as the Bemba, they never relied on the Bemba aristocracy for leadership. Indeed the Bemba people are not strictly indigenous to the Copperbelt Province, having rejoined the Lamba in that province in the 1930s when they went their in large numbers in search of employment opportunities brought about by the opening of large scale copper mines. In contrast members of the Bisa royal family are almost all descendants of Chitimukulu, as are many members of the Swaka and Lala aristocracies. Bemba history is a major historical phenomenon in the development of chieftainship in a large and culturally homogeneous region of central Africa.