For many years, the Sirahna were in possession of the paghvaram, a fragment of one of the orbs of the Prophets. They used the artifact to create a creature called the Dal'Rok and make the Sidau's inhabitants join together in order to repel it.
In 2369, the present Sirah made Miles O'Brien his successor when he realised his chosen successor Ke Hovath was not yet ready to assume the role. After O'Brien was unable to focus the inhabitants with his storytellng, Hovath stepped in and the Dal'Rok was driven away. (DS9 episode: "The Storyteller")
Hovath remained the Sirah for the next seven years, although he began to find the role divided him as he was conflicted between science and religion. For several months each year, he spent time away from Sidau and his role as Sirah. (DS9 novel: Bajor: Fragments and Omens)
"Sirah" is an actual term in Old English, meaning "fool". In the context of an elderly, town fool. The word appears in Shakespeare's "Julius Caesar", to describe one of Caesar's would-be conspirators that ultimately has a role in his death.