(Εὐρυπῶν, Εὐρυτίων), grandson of Procles, was the third king of that house at Sparta, and thenceforward gave it the name of Eurypontidae. Plutarch talks of his having relaxed the kingly power, and played the demagogue; and Polyaenus relates a war with the Arcadians of Mantineia under his command. (Paus. 3.7.1; Plut. Lyc. 2; Polyaen. 2.13.)
[A.H.C]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890