His wife became his empress consort under the name Euphemia. The name was probably chosen for reasons of respectability. The original Euphemia was a Christian martyr during the Diocletianic Persecution. She was a local saint of Chalcedon and the Council of Chalcedon (451) had taken place in a cathedral consecrated in her name. The selection of this name was an early indication that Justin and Lupicina were fervent Chalcedonian Christians. The population of the capital was supportive because of his strong Chalcedonian position on the fierce Christological debate of the time, in opposition to his predecessor's Monophysite leanings.