Dahomey conquered Allada, the origin for the royal family according to oral tradition, and in 1727 he conquered Whydah. This increased size of the kingdom, particularly along the Atlantic coast, and increased power made Dahomey into a regional power. The result was near constant warfare with the main regional state, the Oyo Empire, from 1728 until 1740. The warfare with the Oyo empire resulted in Dahomey assuming a tributary status to the Oyo empire. Tegbesu, also spelled as Tegbessou, was King of Dahomey, in present-day Benin, from 1740 until 1774. Tegbesu was not the oldest son of King Agaja (1718–1740), but
Dahomey Dahomey during the reign of King Ghezo. The anthropologist Judith Gleason wrote a novel, "Agõtĩme: Her Legend" (1970), centered on one of the wives of a king of Dahomey in the late 18th century, who offends her husband who sells her to slavery in Brazil; she makes a bargain with a "vodu" (deity), putting her son on the throne of Dahomey and bringing her home. Another novel tracing the background of a slave, this time in the United States, was "The Dahomean", or "The Man from Dahomey" (1971), by the African-American novelist Frank Yerby; its hero is an aristocratic warrior.