inheritance of certain Tindaamba is matrilineal. There are also female rulers with male subordinates such as the Gundo Naa and the Kpatu Naa. The Gundo Naa has vast land and head all female royals of Dagbon. Important festivals include the Damba, Bugum (fire festival) and the Islamic Eid festivals. The largest settlement of the Dagomba is Tamale, Ghana's third populous and the Northern Region's capital. The Mossi and Dagomba states are among the great West African medieval empires. Beginning in the 12th century, they eventually ruled the lands of the entire northern Volta basin, which today includes all of northern Ghana and Burkina Faso. During their second northern expansion, the Mossi invasion reached eastern Maasina and Lake Débo 1400, Benka in c. 1433 and Walata in 1477-83 (these empires were in present-day Mali). According to Illiasu (1971) in his work The Origins of the Mossi-Dagomba states, the second period of the Mossi-Dagomba success came to an end with the restoration of Imperial Songhai power towards the close of the 15th century. Although the Mossi-Dagomba states have the same grandfather (Naa Gbewa), the Dagomba are traditionally regarded as "senior" to the Mossi states of Ouagadougou, Yatenga and Fada N'Gourma. Origins The aboriginal Dagombas have inhabited Northern for thousands of years. The Dagombas, who descended from Naa Gbewaa migrated from around the areas of Lake Chad after the break up of the Ghana Empire at the end of the 13th Century. Chiefs who are descendants of Gbewaa are the Nanima (singular: Naa) and aboriginal chiefs are the Tindaamba (singular: Tindana). Kingdom of Dagbon The homeland of the Dagombas is called Dagbon and covers about 20,000 km2 in area. Much of the area was occupied by Konkombas before the formation of Dagbon Kingdom. It forms part of the Northern Region of Ghana, which includes the Mamprusi, Nanumba, Gonja, Mossi, Gurunsi (in particular the Frafra and Kusasi peoples), the Wala people and Ligbi. The area constitutes fourteen administrative districts in present-day Ghana. These are the Tamale Metropolitan, Yendi, Savelugu and Sagnerigu municipals, and Tolon, Kumbungu, Nanton, Gushegu, Karaga, Zabzugu, Saboba, Sang, Tatale and Cheriponi districts. The king of the Dagbon Traditional Kingdom is the Ya-Na, whose court and administrative capital is at Yendi. Dagbon as a kingdom has never been subjugated until it was incorporated as a territory of the Gold Coast government. The Dagbon Kingdom has traditional administrative responsibilities hitherto acephalous groups like