Author
- Adam, von Bremen1
- Ambroise, fl. ca. 11961
- Bell, Clair Hayden1
- Boniface, Saint1
- Cassiodorus, Senator1
- Catholic Church. Pope1
- David, Charles Wendell1
- Ferguson, Mary Anne1
- Galbert, de Bruges1
- Gregory, Saint1
- Helmold, ca. 1120-ca. 11771
- John, of Paris1
- Kenney, James F.1
- Larson, Laurence Marcellus1
- Loomis, Louise Ropes1
- Lopez, Robert Sabatino1
- Lunt, William E.2
- Marsilius, of Padua1
- McGinn, Bernard1
- McNeill, John T.1