이레네
In the 7th century, the Slavic tribe of the Drougoubitai raided the lowlands below the city, while in the late 8th century Empress Irene of Athens is said to have rebuilt and expanded the city and named it Irenopolis (Ειρηνούπολις) after herself, although some sources place this Berrhoea-Irenopolis further east, towards Thrace.