Chaonius
Frieze-Dennison Vergil
Chāonius, a, um: (adj.), of Chaonia; Chaonian, 3.293.
Could not find Chaonium in Logeion dictionaries.
Chaonium Proper-name adjective: masculine accusative singular, Proper-name adjective: neuter nominative singular, Proper-name adjective: neuter vocative singular, Proper-name adjective: neuter accusative singular of Chaonius