Topic summary
Ephors

Extracted from the Wikipedia article Ephor.
Legal power
Ephors had the authority to summon and preside over the assembly's regular meetings in the fifth century BC. Initially this power was only assigned to kings in early years. However, with the passing of the Great Rhetra regular meetings became mandated. By the late sixth century BC, the ephors had acquired this authority to oversee the assembly and could use this power against the kings of Sparta. For example, they used this authority to force King Anaxandridas II to change his conjugal arrangements to their advantage. King Anaxandridas' wife was barren but he refused to divorce her so the ephors forced him to marry a second wife to provide heirs.