According to the rules of succession laid down on the island's division into thirds and sixths in 1216, on the death of a hexarch, he was succeeded in his domain by his fellow hexarch within their third, and not by the former's heirs.
De acordo coas regras de sucesión establecido na división da illa en terzos e sextos en 1216, á morte dun exarca, este era sucedido no seu dominio polo seu compañeiro exarca dentro do seu terzo, e non polos antigos herdeiros.