John of Ephesus
The marriage of Constantina and Maurice took place in autumn 582. The ceremony was performed by Patriarch John IV and is described in detail by Theophylact Simocatta. The bridal attendant was the eunuch Margarites. Constantina was proclaimed an Augusta while both Sophia and Anastasia also kept the same title. John of Ephesus mentions all three Augustas residing in the Great Palace.