Pentheius
Could not find Pentheia in Logeion dictionaries.
Pentheia 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 Pentheius
Penthēĭus, a, um, v. Pentheus, A.
Penthēius, a, um, s. Pentheus.