Gender masculine Ieronymos is a Latin transcription of Greek name Ιερώνυμος.Feasts and saints related to given name Ieronymos St Jérôme Feast day June 15 When is Ieronymos's name day? Ieronymos's Day is celebrated on June 15 in memory of St Jérôme. Log in or register to post comments Be the first to rate this name Leave this field blank