TYRIAEUM(Τυριαῖον: Eth. Tyrienses), a town of Lycaonia, which according to Xenophon (Xen. Anab. 1.2.24) was 20 parasangs west of Iconium, and according to Strabo (14. p. 663) on the eastern frontier of Phrygia, and probably on the road from Synnada to Laodiceia, and between the latter and Philomnelium. Near this town Cyrus the Younger reviewed his forces when he marched against his brother. (Comp. Plin. Nat. 5.25; Hierocl. p. 672; and Conc. Chalced. p. 401, where the name is written Τυράϊον.) It is possible that Tyriaeum may be the same town as the Totarion or Tetradion of Ptolemy (Ptol. 5.4.10), the Tyrasion in the Conc. Chalced. (p. 669), and the Tyganion of Anna Comnena (15.7, 13). Its site seems to be marked by the modern Ilgunor Ilghun. (Hamilton, Researches, 2. p. 200; Kiepert in Franz, Fünf Inschriften, p. 36.)
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