What would you call a monarchist government where multiple families rules in turns?
I'm making a fantasy novel. In this one there is a monarchy system, where 4 families rule in turns. After the current monarch dies, the next family in the circle most present an heir from their family to ruse the nation until they die and then the next family takes the throne.
What would you call this government model? Oligarchic monarchy? Poli-Monarchy? Help me with some suggestions. I'm also not sure if this has happened in the history, I can't find anything about it.
Sounds a bit like Malaysia, where the “The Yang di-Pertuan Agong [the constitutional monarch] is elected by the Conference of Rulers, comprising the nine rulers of the Malay states, with the office de facto rotated between them, making Malaysia one of the world's few elective monarchies.”