Council
Sirmium meetings
351–357 · Sirmium
Disputed. The formulas exist. Matching each one to a single session and year is disputed.
Convened by. Constantius II and court bishops
Issues. Finding a creed the emperor could impose after Nicaea's key term had become a slogan.
Outcomes. A series of formulas, including the strongly subordinationist 'Blasphemy' of 357, which even many non-Nicenes disliked. Ossius signed a formula under pressure late in life. These meetings are not one council and are not ecumenical.
Canons or creeds. No lasting canon law. The texts matter for doctrine.