Agiad dynasty

As a result, in order to balance the two royal lines, several names were inserted in the list of Eurypontid kings, such as Soos (meaning "stability"),[4] Prytanis and Eunomos (said to have ruled at the same time as Lycurgus).

It is probable that the two dynasties came to rule jointly under the kings Archelaus (Agiad) and Charilaus (Eurypontid) in the 8th century, as a result of the synoecism that created the polis of Sparta.

The Agiads had their burial ground located in Pitana, while the Eurypontids were in Limnai, which suggest that the dual monarchy was created when the four villages merged.

[8] The genealogies given by the Greek writers Herodotus and Pausanias remain highly suspect before the 5th century, as it is not conceivably believable to have 16 direct successions (from father to son) from Eurystenes and Prokles.

Paul Cartledge suggest an average length of 30 years per generation, thus giving a regnal date of c. 930–900 for Agis I, founder of the Agiads.