Zeuxidamus in Wikipedia
Zeuxidamus (Ζευξίδαμος) can refer to two ancient Spartans.
1. A king of Sparta, and tenth of the Eurypontid dynasty. He was grandson of Theopompus, and father of Anaxidamus, who succeeded him. 
2. A son of Leotychides, king of Sparta. He was also named Cyniscus. He died before his father, leaving a son, Archidamus II