Isiacus
Could not find Isiacae in Logeion dictionaries.
Isiacae Proper-name adjective: feminine genitive singular, Proper-name adjective: feminine vocative plural, Proper-name adjective: feminine nominative plural, Proper-name adjective: feminine dative singular of Isiacus
Īsĭăcus, a, um, v. Isis, II.
Īsiacus, a, um, s. Īsis.
Īsĭăcus, (15) a, um, dʼIsis : Ov. P. 1, 1, 52 || subst. m. , prêtre dʼIsis : Plin. 27, 53 ; Suet. Dom. 1.