Upon the death of an ialorixá, the successor is chosen, usually among her "filhas-de-santo", usually by means of divination using consecrated cowrie shells that are considered to be the mouthpieces of the Orixa
cowrie shell. However the succession may be very disputed or may fail to find a successor, and often leads to splitting or closing down of the
house. In some terreiros (like Gantois, Alaketu, Terreiro do Cobre and now, the Oxumarê), the leadership is inherited by a late ialorixá's female blood relative (usually one of her own daughters). Only a handful of
houses in Brazil have seen their 100th anniversary. Among the oldest that are still existent are
Ilé Axé Iyá Nassô Oká (literally, "White House at the Old Sugarmill"), in Salvador, Bahia, and the
Casa das Minas in
São Luís,
Maranhão (ca. 1796).