The founding story is unusually precise, which is one reason to handle it carefully. On 15 November 1908, at a Kardecist Spiritist session in Niteroi, a seventeen-year-old named Zelio Fernandino de Moraes is said to have been taken by a spirit calling itself the Caboclo das Sete Encruzilhadas, who rebuked the assembled Spiritists for dismissing the spirits of Africans and Indigenous people as unevolved and announced a religion in which they would be heard. The Tenda Espirita Nossa Senhora da Piedade is dated to that night.
Historians treat this as a foundation narrative rather than an established sequence of events. Contemporary documentation is thin, much of the account was set down decades later, and comparable centres appear to have formed independently in Rio de Janeiro and Sao Paulo in the same period. Some practitioners hold to the story firmly; others regard it as a myth of origin adopted after the fact by a plural movement. Both positions are held inside the religion.
Early leadership was largely white, urban and middle class, and worked hard to present Umbanda as orderly, charitable, Christian in tone and distinctively Brazilian. Under Getulio Vargas and later under the military government that meant registering centres, forming federations, holding congresses, and marking distance from Candomble, which was being policed as witchcraft. The strategy worked. Umbanda gained a legitimacy Candomble was denied, and grew quickly in the industrialising southeast.
The cost of that strategy is the tradition's central internal argument. Umbanda Branca, white Umbanda, keeps the Spiritist and Catholic framing and treats the African material as symbolic. Africanised strands, including forms called Omoloco and Umbandomble, have moved back toward Candomble practice, restoring drums, initiation and sacrifice. Most houses sit somewhere between and rarely use the labels at all.