P. (?) Iulius Castus, Legatus Augusti pro praetore in Thrace AD 184 to 185. His name appears on coins of Anchialus, Hadrianopolis,
and Pautalia. In latter case always as Hegemon. Lit.: B. E. Thomasson, Laterculi Praesidum I (1984) 168 no. 37; ibid., I Addenda
(2011) 22:037; PIR² I 251.