1. Where was Marinus born?
2. Who ordained Marinus sub-deacon?
3. Who sent Marinus as emissary to the fourth Council of Constantinople?
4. Who appointed Marinus ambassador to Constantinople?
5. Of which diocese was Marinus bishop?
6. When was Marinus I pope?
7. When was Marinus I elected pope?
8. Whon did Marinus I restore as bishop of Porto?
9. When did Marinus I die?
10. Which of the following is true of Marinus I?