SINNADA of PHRYGIA. – It is the present-day Çiftikasa, formerly the metropolitan see of Phrygia Salutaria, now a titular archbishopric (Ann. Pont. 1952, p. 594).
During the persecution under Probus, the holy martyrs Trophimus, Sabatius and Dorimedon suffered there; two recensions of their Passion and a fragment of a third exist, edited by G. Mercati (Note di letteratura cristiana antica [Studi e testi, 5], Rome 1901, pp. 207 ff.).
Their martyrdom is depicted in the Menologium of Basil II (Cod. Vat. gr. 1613, p. 15).
In the Syriac Martyrology, S. is commemorated several times: on 19 July for the martyrs Macedonius and Tatian of Meros, put to death at S. (under the same date in the Hieronymian); on 30 July for the martyrs Democritus and Secundus and Dionysius; on 13 August for the martyr Antoninus; on 20 September for Dorimedon, martyred together with Trophimus and Sabbatius of Antioch in Pisidia; in the Hieronymian, Trophimus is on 19 September and Dorimedon on 20 September.
Near S. a stone reliquary was found, fashioned like a small sarcophagus with a two-pitched lid, equipped with acroteria and fastened with iron clamps; on the outside of the lid was a Greek inscription declaring that the reliquary contained the relic of the skull of St Trophimus (whose remains were found inside); another Greek inscription was on the front of the small sarcophagus. W. M. Calder held that it dated from after the persecution of Maximinus or that of Licinius; P. Franchi de’ Cavalieri saw no need to lower the date to the triumph of the Church. The precious reliquary is now in the Ottoman Museum at Bursa.