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The son of Tellis,[1] a general of the Lakedaimonians. When Methone went over to the Athenian side, he waged war against it and restored it [sc. to the Spartans].[2] He also distinguished himself as a general at Pylos,[3] being the first to leap from the ship. There he was also wounded and lost his shield. After these events a year-long truce resulted, which the Athenians were the first to break. Because he was popular in Amphipolis and Thrace they registered him as their city-founder in place of Hagnon.[4] The war, up until the deaths of Brasidas and Kleon,[5] lasted ten years, and was called the Archidamian.[6]
'[Attacking] on the pretense that one favors Brasidas' side.'[7] Meaning that of the Lakedaimonians' side.

Βρασίδας, ὁ Τέλλιδος, Λακεδαιμονίων στρατηγὸς, Μεθώνην ἀποστᾶσαν πρὸς Ἀθηναίους πολεμήσας ἀνεκαλέσατο. ἠρίστευσε δὲ καὶ περὶ Πύλον στρατηγῶν, πρῶτος τῆς νηὸς ἐκπηδήσας: οὗ καὶ ἐτρώθη καὶ τὴν ἀσπίδα ἀπώλεσεν: ἐπὶ τούτοις σπονδαὶ ἐγένοντο ἐνιαύσιοι, ἃς Ἀθηναῖοι λύειν ἤρξαντο. περὶ δὲ Ἀμφίπολιν καὶ Θρᾴκην εὐδοκιμοῦντα αὐτὸν οἰκιστὴν ἀντὶ Ἅγνωνος ἐπεγράψαντο. ὁ δὲ πόλεμος ὁ μέχρι τῆς Βρασίδα καὶ Κλέωνος τελευτῆς ἔτη ἐπέσχε δέκα, ἐκλήθη δὲ Ἀρχιδάμιος. αἰτίας δὲ περὶ αὐτοῦ προστιθέντες, ὡς φρονεῖ τὰ Βρασίδα. ἀντὶ τοῦ τῶν Λακεδαιμονίων.

C5 BC (died 422). See generally OCD(3) p.258.
[1] Tellis is attested as one of the Spartan signatories to the Peace of Nikias in 421 (Thuc. 5.19.2). Brasidas' mother was named Argileonis (Plutarch Moralia 240C).
[2] Contrary to the impression given by the Suda, Methone never revolted against Sparta. It was a perioikic town on the Messenian coast, which an Athenian naval expedition raided in 431, the first year of the Peloponnesian War. Brasidas, who happened to be nearby, rushed to the town with one hundred hoplites and managed to save it from capture by the Athenians (Thuc. 2.25.2.). In the following year, possibly as a result of his services at Methone, Brasidas was chosen as eponymous ephor at Sparta (Xenophon Hellenica 2.3.10; Diodorus 12.43.2).
[3] A site on the west coast of Messenia, which an Athenian force occupied in 425. The Spartans and their allies initially attempted to dislodge the Athenians with an amphibious landing, but were repulsed despite Brasidas' heroics (Thuc. 4.11f).
[4] Hagnon was the original Athenian founder of the strategic colony at Amphipolis in 437 (Thuc. 4.102). Brasidas captured the town from the Athenians in 424 (Thuc. 4.103-7). Cf. epsilon 2026.
[5] Brasidas and Kleon (kappa 1731), his counterpart for belligerence on the Athenian side, were both killed in the battle of Amphipolis in 422 (Thuc. 5.2f, 6-11), and the Peace of Nicias in the following year caused a temporary cessation of hostilities.
[6] After Archidamos II, king of Sparta, who led the first Spartan and allied invasion of Attica in 431. See alpha 4108.
[7] An approximation of Aristophanes, Peace 640, with comment from the scholia there.

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