Histories

Be that as it may, the anger of Talthybius, Agamemnon's herald, fell upon the Lacedaemonians. At Sparta [22.4417,37.0667] (Perseus) Sparta there is a shrine of Talthybius and descendants of Talthybius called Talthybiadae, who have the special privilege of conducting all embassies from Sparta [22.4417,37.0667] (Perseus) Sparta.

Now there was a long period after the incident I have mentioned above during which the Spartans were unable to obtain good omens from sacrifice. The Lacedaemonians were grieved and dismayed by this and frequently called assemblies, making a proclamation inviting some Lacedaemonian to give his life for Sparta [22.4417,37.0667] (Perseus) Sparta. Then two Spartans of noble birth and great wealth, Sperthias son of Aneristus and Bulis son of Nicolaus, undertook of their own free will to make atonement to Xerxes for Darius' heralds who had been killed at Sparta [22.4417,37.0667] (Perseus) Sparta.

Thereupon the Spartans sent these men to Media for execution.