Arethusius
Could not find Arethusia in Logeion dictionaries.
Arethusia Proper-name adjective: neuter nominative plural, Proper-name adjective: neuter vocative plural, Proper-name adjective: feminine nominative singular, Proper-name adjective: feminine ablative singular, Proper-name adjective: feminine vocative singular, Proper-name adjective: neuter accusative plural of Arethusius
Arethu'sius, M.
(Ἀρεθούσιος), the author of a confession of faith, promulgated in the third council of Sirmium, A. D. 359, and was subsequently a martyr under Julian. (Socrat. H. E. 2.30, with Valesius' note; Nazian. Orat. 48; Tillemont, vii. p. 726.)