 According to this story, there was a Fon prince named Agassu in the city of Tado who tried to become king but lost the struggle and took over the city of Allada instead.Around 1600, two (in some versions three) princes in Agassu's lineage fought over who would be the ruler of Allada.It was decided that both princes would leave the town and found new kingdoms with Teagbanlin going south and founding the city that would become Porto-Novo and Do-Aklin moving to the Abomey plateau to the north (Porto-Novo and the Kingdom of Dahomey remained rivals for much of history).