Saint Damasus I
Catholic Encyclopedia, Catholic Online, Lives of the Saints, Patron Saints Index, Popes Through the Ages, The Ecole Glossary
Saint David of Wales
Catholic Encyclopedia: St. David, Celebrating St. David, David, Saint, Dewi of Wales, Dydd Dewi Sant, For All the Saints: David of Wales, Patron Saints Index: David of Wales, Saint David and Saint David's Day, St David, Archbishop, Patron of Wales, St. David: Fact and Legends, Other churches named
Saint Denis
Catholic Encyclopedia, Denis, Rusticus, & Eleutherius, Patron Saints Index, Sts. Denis, Rusticus, and Eleutherius, Vietnamese Eucharistic Youth Society
Saint Desiderius of Langres
Desiderius (Didier) of Langres, St. Desiderius, Bishop of Langres, Martyr
Saint Deusdedit I
Catholic Encyclopedia, For All the Saints, Popes Through the Ages, The Ecole Glossary
Saint Dionysius the Great
Works, Athanasius: On the Opinion of Dionysius, Catholic Encyclopedia, For All the Saints, James Kiefer's Christian Biographies
Saint Dionysius, Pope
Works, Catholic Encyclopedia, For All the Saints, Popes Through the Ages, The Ecole Glossary
Saint Dominic
Alive: St. Dominic, Catholic Encyclopedia: St. Dominic, Dominic de Guzman, Dominic, Saint, Fausto Appetente Die, James Kiefer's Christian Biographies: Dominic, Of S. Dominic, Saint Dominic, St. Dominic and His Life, St. Dominic of Silos
Saint Drithelm
Bede's Ecclesiastical History of England, Cha, Drithelm, Saint Drithelm, St. Drythelm
Saint Dunstan
Catholic Encyclopedia: St. Dunstan, Catholic Online: St. Dunstan, Dunstan of Canterbury, Dunstan of Canterbury, Monk and Archbishop, Dunstan, Saint, Icon of St. Dunstan, Patron Saints Index: Dunstan, The Ecole Glossary: Dunstan
Catholic Encyclopedia: Saint Diarmaid
Brief biographies of two Irish saints of this name. The first mentioned was Archbishop of Armagh, and died in 851 or 852. The second, St. Diarmaid the Just, was a monastic founder and distinguished writer of the mid-sixth century.
Catholic Encyclopedia: Saint Donnan
Three or possibly four Irish saints of this name lived in the sixth and seventh centuries. St. Donnan of Eigg and St. Donnan of Auchterless are probably the same person. There was also a St. Donnan the Deacon, blood brother of St. Kieran of Clonmacnoise; and a St. Donnan who was a nephew of St. Senan and who succeeded St. Kieran of Clonmacnoise as Abbot of Aingin.