Wikipedia
Spartolos was the chief city of the Bottiaeans, perhaps in Bottike, North-West Chalcidice. It was a member of the Delian League under the Thracian phoros, paying 2 or 3,5 talents, until the beginning of the Peloponnesian War, when the Bottiaean and the Chalkidian League revolted against Athens ( Battle of Spartolos, 429 BC). It seems however that sometime later it became again an Athenian allied member. It is mentioned again in connection with the Spartan Teleutias' attack on Olynthus in 381 BC.
The last mention of Spartolos is not as a city but among other agricultural territories (ca.305-297 BC) in a royal decree of Cassander about land leasing to a certain Perdikkas son of Koinos (the lands had partly been awarded by Philip II to Polemokrates, his grandfather).