Internet History Sourcebooks Project
Fordham University: Medieval Sourcebook: Gregory of Nyssa: Life of Macrina
The complete text of Gregory's book on his sister, Macrina. The book was written during the 4th century.
New Advent
Catholic Encyclopedia: St. Gregory of Nyssa
A detailed biography of the Saint, it also provides a good summary of his major writings.
Global Catholic Network
Global Catholic Network: Saint Gregory, Pope, Doctor of the Church
A biographical sketch of St. Gregory the Great by St. Bede the Venerable. Details of his life, his career as the Pope, and efforts to convert the English are recorded.