The general council was convoked to Sardica in Dacia by the Emperors Constans and Constantius II in AD 343. It was split in two parts because the majority of the Eastern bishops did not want to accept the presence of Athanasius at the council. See Martin 1996: 422–436. The presence of Archidamus and Philoxenus, together with the deacon Leo, at Sardica is also attested to by "Fragmenta Historica" of Hilary of Poitiers B, II, 2, 10 (Corpus Scriptorum Ecclesiasticorum Latinorum 65, 127). They also signed the letter of Athanasius to the clergy of Mareote in Egypt (transmitted by Thedosius Diaconus, Sylloge, edited in C.H. Turner, Ecclesiae Occidentalis Monumenta Iuris Antiquissima. Canonum et conciliorum graecorum interpretationes latinae,  I,2,4, Oxford 1939, p. 660).