Seteia
Σετηΐα
Seteia (Σετηΐα or Σεγηΐα εἴσχυσις, Ptol. 2.3.2), an estuary on the W. coast of Britannia Romana, opposite the isle of Mona, into which the Dee discharges itself.
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.