HIP'PIAS (Lat., from Gk. '17rwtarl ( ?-c.490 u.c.). A tyrant of Athens. son of Pisistratus. upon whose death (Etc. 527) he assumed the government in conjunction with his brother ilip parelms. According to Thucydides, the govern ment of the brothers was conducted on the same principle as that of their father, and many dis tinguished poets, including of Ceos and Anacreon of Teos, lived at Athens ler their patronage. After the assassination of Hippar elms, in ire. 511. llippias seized the le government alone, and avenged the death of his ',nailer by imposing extraordinary taxes, selling offices, and putting to death all of whom he enter tained the least suspicion. At length, however, his despotism was overthrown. The Delphic oracle was bribed to enjoin the Lacedwinonians to free Athens from the Pisistratida-, and after one or two 1111,11CCUSSilli nitea,pl, tyrant's old enemies, the Alenneonidw, to whom Megades belonged, supported by a Spartan farce l'Icomenes. defeated Ilippias in the field, cap
tured his children, and compelled him and all his relatives to leave Attica (n.c. 510). As soon ns they had departed, a decree was passed condemn ing the tyrant and his family to iierpetual ban ishment, and a monument commemorative of their crimes and oppression was erected in the Acropolis. After spending some time at Sigeum, llippias went to the Court of Darius, and incited the first war of the Persians against the Euro pean Greeks. Ile accompanied the expedition sent under Datis and Artaphernes, and persuaded the Persians to land at Marathon. It cannot be determined whether he was killed during the battle or whether he (lied at Lemnos on his return.