Waalo
Walo () was a kingdom on the lower Senegal River in West Africa, in what are now Senegal and Mauritania. It included parts of the valley proper and areas north and south, extending to the Atlantic Ocean. To the north were Moorish emirates; to the south was the kingdom of Cayor; to the east was Jolof. Waalo had a complicated political and social system, which has a continuing influence on Wolof culture in Senegal today, especially its highly formalized and rigid caste system. The kingdom was indirectly hereditary, ruled by three matrilineal families: the Logar, the Tedyek, and the Joos , all from backgrounds. The Joos were of Serer origin. This Serer matriclan was established in Waalo by Lingeer Ndoye Demba of Sine. Her grandmother Lingeer Fatim Beye is the matriarch and early ancestor of this dynasty. These matrilineal families engaged in constant dynastic struggles to become "Brak" or king of Waalo, as well as warring with Waalo's neighbors. The royal title "Lingeer" means queen or royal princess, used by the Serer and Wolof. Waalo was founded in 1287. The semi-legendary figure NDiadiane Ndiaye, was from this kingdom. The mysterious figure went on to rule the Jolof Empire. Under  Ndiadian Ndiaye, Jolof made Waalo a vassal. The royal capital of Waalo was first Ndiourbel (Guribel) on the north bank of the Senegal River (in modern Mauritania), then Ndiangué on the south bank of the river. The capital was moved to Nder on the west shore of the Lac de Guiers. Waalo was subject to constant raids for slaves not only from the Moors but also in the internecine wars. The Brak ruled with a kind of legislature, the Seb Ak Baor, over a complicated hierarchy of officials and dignitaries. Women had high positions and figured prominently in the political  and military history. Waalo had lucrative treaties with the French, who had established their base at the island of Saint-Louis (now Saint-Louis, Senegal) near the mouth of the river. Waalo was paid fees for every boatload of gum arabic or slaves that was shipped on the river, in return for its "protection" of the trade. Eventually, this protection became ineffective. Vassals of Waalo, like Beetyo (Bethio), split off. In all, Waalo had 52 kings since its founding. Waalo had its own traditional African religion. The ruling class was slow to accept Islam, which had spread in the valley ; the Brak converted only in the 19th century. Kings of Waalo. Names and dates taken from John Stewart's "African States and Rulers" (1989).