Eucleidas [SEP] father
Eucleidas
Eucleidas () reigned Sparta from 227 BC to 222 BC. He was an Agiad, son of Leonidas II, in the place of the Eurypontid king. 
His brother, Cleomenes III, deposed his Eurypontid colleague Archidamus V, and installed his brother as his new co-ruler. 
According to Pausanias, Cleomenes poisoned Eudamidas III, his Eurypontid colleague, and shared the royal power with his brother Eucleidas.
Eucleidas was killed fighting against the Macedonians at the Battle of Sellasia (222 BC).
living within the framework of the military-minded masses. More significantly, Cleomenes decreed that his new army should follow the model of the Macedonian army, a century after the bitter defeat of Chaeronea. This was characterised by the use of the Macedonian sarissa, a five-meter spike, which performed well over the next two campaigning seasons. Cleomenes completed his reforms by placing his brother, Eucleidas, in charge, making him the first Agiad king on the Eurypontid throne.
Macedonian intervention.
In 226 BC, the