Onceium
Ὄγκειον
Onceium (Ὄγκειον), a place in Arcadia upon the river Ladon, near Thelpusa, and containing a temple of Demeter Erinnys. (Paus. 8.25.4; Steph. B. sub voce The Ladon, after leaving this temple, passed that of Apollo Oncaeates on the left, and that of the boy Asclepius on the right. (Paus. 8.25.11.) The name is derived by Pausanias from Oncus, a son of Apollo, who reigned at this place. Leake supposes that Tumbíki, the only remarkable site on the right bank of the Ladon between Thelpusa and the Tuthoa, is the site of the temple of Asclepius. (Morea, vol. ii. p. 103.) Other writers mention a small town ONCAE (Ὄγκαι) in Arcadia, which is probably the same as Onceium. (Tzetzes, ad Lycophr. 1225; Etym. M. p. 613; Phavorin. s. v.)
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.